diff --git a/src/helpers/upload_request.js b/src/helpers/upload_request.js
index 652667e9..b8d6d2ad 100644
--- a/src/helpers/upload_request.js
+++ b/src/helpers/upload_request.js
@@ -38,7 +38,10 @@
       request.setRequestHeader("Print-After-Upload", "?1");
     }
     request.setRequestHeader("Overwrite", "?1");
-    request.setRequestHeader("Content-Type", "text/x.gcode");
+    request.setRequestHeader(
+      "Content-Type",
+      url.endsWith(".bgcode") ? "application/gcode+binary" : "text/x.gcode"
+    );
     for (const [key, value] of Object.entries(getHeaders())) {
       request.setRequestHeader(key, value);
     }
diff --git a/tools/server/mock/fdm.js b/tools/server/mock/fdm.js
index dab05320..b5b895b0 100644
--- a/tools/server/mock/fdm.js
+++ b/tools/server/mock/fdm.js
@@ -45,7 +45,7 @@ class PrinterFDM extends Printer {
   }
 
   projectExtensions() {
-    return [".gcode"]
+    return [".gcode", ".bgcode"]
   }
 
   uploadFile(options) {
diff --git a/webpack.config.js b/webpack.config.js
index e7f9a899..a8b76488 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -28,7 +28,7 @@ module.exports = (env, args) => {
     PRINTER_NAME: printerName,
     PRINTER_CODE: printerName.split(" ").slice(-1)[0].toLowerCase(),
     PRINTER_TYPE: env["PRINTER_TYPE"] || "fdm", // "fdm" | "sla"
-    FILE_EXTENSIONS: env["FILE_EXTENSIONS"] || [".gcode"],
+    FILE_EXTENSIONS: env["FILE_EXTENSIONS"] || [".gcode", ".bgcode"],
 
     APP_NAME: env["APP_NAME"] || "PrusaLink",
     APP_TITLE: env["APP_TITLE"] || env["PRINTER_NAME"] || DEFAULT_NAME,