diff --git a/tools/server/public/index.html.gz b/tools/server/public/index.html.gz
index a2a2ee1247310..1f5769de410a2 100644
Binary files a/tools/server/public/index.html.gz and b/tools/server/public/index.html.gz differ
diff --git a/tools/server/webui/package-lock.json b/tools/server/webui/package-lock.json
index 2c23a7580b38c..a4a9380c64512 100644
--- a/tools/server/webui/package-lock.json
+++ b/tools/server/webui/package-lock.json
@@ -44,6 +44,7 @@
         "eslint": "^9.17.0",
         "eslint-plugin-react-hooks": "^5.0.0",
         "eslint-plugin-react-refresh": "^0.4.16",
+        "fflate": "^0.8.2",
         "globals": "^15.14.0",
         "prettier": "^3.4.2",
         "sass-embedded": "^1.83.4",
@@ -2802,6 +2803,13 @@
         "reusify": "^1.0.4"
       }
     },
+    "node_modules/fflate": {
+      "version": "0.8.2",
+      "resolved": "https://registry.npmjs.org/fflate/-/fflate-0.8.2.tgz",
+      "integrity": "sha512-cPJU47OaAoCbg0pBvzsgpTPhmhqI5eJjh/JIu8tPj5q+T7iLvW/JAYUqmE7KOB4R1ZyEhzBaIQpQpardBF5z8A==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/file-entry-cache": {
       "version": "8.0.0",
       "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-8.0.0.tgz",
diff --git a/tools/server/webui/package.json b/tools/server/webui/package.json
index b83defdf34f5f..1927f696fbbb9 100644
--- a/tools/server/webui/package.json
+++ b/tools/server/webui/package.json
@@ -47,6 +47,7 @@
     "eslint": "^9.17.0",
     "eslint-plugin-react-hooks": "^5.0.0",
     "eslint-plugin-react-refresh": "^0.4.16",
+    "fflate": "^0.8.2",
     "globals": "^15.14.0",
     "prettier": "^3.4.2",
     "sass-embedded": "^1.83.4",
diff --git a/tools/server/webui/vite.config.ts b/tools/server/webui/vite.config.ts
index 366df3b751c58..fba4da645fa09 100644
--- a/tools/server/webui/vite.config.ts
+++ b/tools/server/webui/vite.config.ts
@@ -3,7 +3,7 @@ import react from '@vitejs/plugin-react';
 import { viteSingleFile } from 'vite-plugin-singlefile';
 import path from 'node:path';
 import fs from 'node:fs';
-import zlib from 'node:zlib';
+import * as fflate from 'fflate';
 
 /* eslint-disable */
 
@@ -33,9 +33,10 @@ const BUILD_PLUGINS = [
       },
       writeBundle() {
         const outputIndexHtml = path.join(config.build.outDir, 'index.html');
-        const content =
+        let content =
           GUIDE_FOR_FRONTEND + '\n' + fs.readFileSync(outputIndexHtml, 'utf-8');
-        const compressed = zlib.gzipSync(Buffer.from(content, 'utf-8'), {
+        content = content.replace(/\r/g, ''); // remove windows-style line endings
+        const compressed = fflate.gzipSync(Buffer.from(content, 'utf-8'), {
           level: 9,
         });