diff --git a/layout/_partials/layout.pug b/layout/_partials/layout.pug
index de3d196..0ef99d9 100644
--- a/layout/_partials/layout.pug
+++ b/layout/_partials/layout.pug
@@ -6,10 +6,19 @@ include ../_mixin/widgets.pug
 if (theme.quicklink.ignores)
     - ignores.push(theme.quicklink.ignores)
 
+- var covers = _cover_index(page, 6)
+- var enableFixedCover = theme.homeConfig?.fixedCover
+
 doctype html
 html(lang=page.language?page.language:config.language, style=theme.grayMode ? 'filter: grayscale(1);':'' )
     head
         != partial('_partials/head/head.pug', {}, {cache: true})
+        if enableFixedCover
+            link(rel="preload" href=theme.homeConfig.fixedCover as="image" fetchpriority="high")
+        else
+            each image in covers
+                link(rel="preload" href=image as="image" fetchpriority="high")
+
         != partial('_partials/head/head_com.pug')
         != shokax_inject('head')
         title
@@ -35,12 +44,11 @@ html(lang=page.language?page.language:config.language, style=theme.grayMode ? 'f
 
                     != partial('_partials/header.pug', {}, {cache: true})
                 div(id="imgs" class="pjax")
-                    if theme.homeConfig.gradient || theme.homeConfig.fixedCover
+                    if theme.homeConfig.gradient || enableFixedCover
                         //- cover不可用时用Bing随机图片代替
-                        - var coverImage = theme.homeConfig.fixedCover || "https://7ed.net/bing/api"
+                        - var coverImage = theme.homeConfig?.fixedCover || "https://7ed.net/bing/api"
                         img(src=coverImage loading="eager" decoding="async" fetchpriority="high")
                     else
-                        - var covers = _cover_index(page, 6)
                         if covers.length === 6
                             ul
                                 each image in covers
diff --git a/package.json b/package.json
index 71eee18..9b11cec 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hexo-theme-shokax",
-    "version": "0.4.0",
+    "version": "0.4.1",
     "description": "a hexo theme based on shoka",
     "main": "index.js",
     "repository": "https://github.com/theme-shoka-x/hexo-theme-shokaX",
diff --git a/scripts/helpers/asset.ts b/scripts/helpers/asset.ts
index 62bb5dd..72ae0f3 100644
--- a/scripts/helpers/asset.ts
+++ b/scripts/helpers/asset.ts
@@ -5,11 +5,6 @@ import theme_env from '../../package.json'
 import { htmlTag, url_for, stripHTML } from 'hexo-util'
 import { getVendorLink } from '../utils'
 
-// TODO 弃用函数
-hexo.extend.helper.register('_new_comments', function (mode) {
-  return ''
-})
-
 hexo.extend.helper.register('_safedump', (source) => {
   return JSON.stringify(source)
 })
@@ -50,7 +45,9 @@ hexo.extend.helper.register('_vendor_font', () => {
   return fontFamilies
     ? htmlTag('link', {
       rel: 'stylesheet',
-      href: `${fontHost}/css?family=${fontFamilies.concat(fontDisplay, fontSubset)}`
+      href: `${fontHost}/css?family=${fontFamilies.concat(fontDisplay, fontSubset)}`,
+      media: 'none',
+      onload: "this.media='all'"
     })
     : ''
 })
@@ -76,9 +73,6 @@ hexo.extend.helper.register('vendor_js', function () {
   for (const jsSync in vendors.js) {
     res += htmlTag('script', { src: getVendorLink(hexo, vendors.js[jsSync]), async: true }, '')
   }
-  // for (const jsAsync in vendors.async_js) {
-  //   res += htmlTag('script', { src: getVendorLink(hexo, vendors.async_js[jsAsync]), async: true }, '')
-  // }
   return res
 })
 
diff --git a/scripts/plugin/index.ts b/scripts/plugin/index.ts
index 9a5807a..4d72865 100644
--- a/scripts/plugin/index.ts
+++ b/scripts/plugin/index.ts
@@ -22,10 +22,10 @@ hexo.on('generateBefore', () => {
 
 hexo.on('generateAfter', () => {
   // 检查版本更新
-  fetch('https://api.github.com/repos/theme-shoka-x/hexo-theme-shokaX/releases/latest').then((res) => {
+  fetch('https://registry.npmmirror.com/hexo-theme-shokax').then((res) => {
     res.json().then((resp) => {
       try {
-        const latest = resp.tag_name.replace('v', '').split('.')
+        const latest = resp['dist-tags'].latest
         const current = version.split('.')
         let isOutdated = false
         for (let i = 0; i < Math.max(latest.length, current.length); i++) {