diff --git a/frontend/appflowy_flutter/web/index.html b/frontend/appflowy_flutter/web/index.html
index 5ce9ee11a8030..f47e197c0ae17 100644
--- a/frontend/appflowy_flutter/web/index.html
+++ b/frontend/appflowy_flutter/web/index.html
@@ -1,101 +1,105 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
 <head>
-  <!--
-    If you are serving your web app in a path other than the root, change the
-    href value below to reflect the base path you are serving from.
-
-    The path provided below has to start and end with a slash "/" in order for
-    it to work correctly.
-
-    For more details:
-    * https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base
-
-    This is a placeholder for base href that will be replaced by the value of
-    the `--base-href` argument provided to `flutter build`.
-  -->
-  <base href="$FLUTTER_BASE_HREF">
+  <base href="/" />
 
   <meta charset="UTF-8">
   <meta content="IE=Edge" http-equiv="X-UA-Compatible">
-  <meta name="description" content="A new Flutter project.">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <meta name="description" content="Flutter Web App">
 
-  <!-- iOS meta tags & icons -->
+  <!-- App title & icons -->
+  <title>AppFlowy Flutter</title>
+  <link rel="manifest" href="manifest.json">
+  <link rel="apple-touch-icon" href="icons/Icon-192.png">
   <meta name="apple-mobile-web-app-capable" content="yes">
   <meta name="apple-mobile-web-app-status-bar-style" content="black">
   <meta name="apple-mobile-web-app-title" content="appflowy_flutter">
-  <link rel="apple-touch-icon" href="icons/Icon-192.png">
 
-  <title>appflowy_flutter</title>
-  <link rel="manifest" href="manifest.json">
+  <!-- 🌈 Loading Screen Styles -->
+  <style>
+    body {
+      margin: 0;
+      padding: 0;
+      height: 100vh;
+      background: linear-gradient(135deg, #e3f2fd, #bbdefb);
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      flex-direction: column;
+      font-family: 'Segoe UI', Arial, sans-serif;
+      color: #0d47a1;
+    }
+
+    #loading-container {
+      text-align: center;
+    }
+
+    #loading-logo {
+      width: 100px;
+      height: 100px;
+      margin-bottom: 20px;
+      animation: fadeIn 1.2s ease-in-out;
+    }
+
+    #loading-text {
+      font-size: 1.3rem;
+      font-weight: 600;
+      margin-top: 10px;
+      animation: pulse 2s infinite;
+    }
+
+    .spinner {
+      width: 50px;
+      height: 50px;
+      border: 5px solid rgba(13, 71, 161, 0.2);
+      border-top-color: #0d47a1;
+      border-radius: 50%;
+      animation: spin 1s linear infinite;
+      margin: 0 auto;
+    }
+
+    @keyframes spin {
+      to { transform: rotate(360deg); }
+    }
+
+    @keyframes pulse {
+      0%, 100% { opacity: 0.7; }
+      50% { opacity: 1; }
+    }
+
+    @keyframes fadeIn {
+      from { opacity: 0; transform: scale(0.9); }
+      to { opacity: 1; transform: scale(1); }
+    }
+  </style>
 </head>
 <body>
-  <!-- This script installs service_worker.js to provide PWA functionality to
-       application. For more information, see:
-       https://developers.google.com/web/fundamentals/primers/service-workers -->
-  <script>
-    var serviceWorkerVersion = null;
-    var scriptLoaded = false;
-    function loadMainDartJs() {
-      if (scriptLoaded) {
-        return;
-      }
-      scriptLoaded = true;
-      var scriptTag = document.createElement('script');
-      scriptTag.src = 'main.dart.js';
-      scriptTag.type = 'application/javascript';
-      document.body.append(scriptTag);
-    }
+  <!-- 🌟 Loading Screen -->
+  <div id="loading-container">
+    <img id="loading-logo" src="icons/Icon-192.png" alt="App Logo">
+    <div class="spinner"></div>
+    <div id="loading-text">Loading AppFlowy Flutter...</div>
+  </div>
 
-    if ('serviceWorker' in navigator) {
-      // Service workers are supported. Use them.
-      window.addEventListener('load', function () {
-        // Wait for registration to finish before dropping the <script> tag.
-        // Otherwise, the browser will load the script multiple times,
-        // potentially different versions.
-        var serviceWorkerUrl = 'flutter_service_worker.js?v=' + serviceWorkerVersion;
-        navigator.serviceWorker.register(serviceWorkerUrl)
-          .then((reg) => {
-            function waitForActivation(serviceWorker) {
-              serviceWorker.addEventListener('statechange', () => {
-                if (serviceWorker.state == 'activated') {
-                  console.log('Installed new service worker.');
-                  loadMainDartJs();
-                }
-              });
-            }
-            if (!reg.active && (reg.installing || reg.waiting)) {
-              // No active web worker and we have installed or are installing
-              // one for the first time. Simply wait for it to activate.
-              waitForActivation(reg.installing ?? reg.waiting);
-            } else if (!reg.active.scriptURL.endsWith(serviceWorkerVersion)) {
-              // When the app updates the serviceWorkerVersion changes, so we
-              // need to ask the service worker to update.
-              console.log('New service worker available.');
-              reg.update();
-              waitForActivation(reg.installing);
-            } else {
-              // Existing service worker is still good.
-              console.log('Loading app from service worker.');
-              loadMainDartJs();
-            }
+  <!-- 🚀 Flutter Web Bootstrap -->
+  <script src="flutter.js" defer></script>
+  <script>
+    window.addEventListener('load', function() {
+      _flutter.loader.loadEntrypoint({
+        serviceWorker: {
+          serviceWorkerVersion: null,
+        },
+        onEntrypointLoaded: function(engineInitializer) {
+          engineInitializer.initializeEngine().then(function(appRunner) {
+            // Remove the loading screen
+            document.getElementById('loading-container').remove();
+            // Run the Flutter app
+            appRunner.runApp();
           });
-
-        // If service worker doesn't succeed in a reasonable amount of time,
-        // fallback to plain <script> tag.
-        setTimeout(() => {
-          if (!scriptLoaded) {
-            console.warn(
-              'Failed to load app from service worker. Falling back to plain <script> tag.',
-            );
-            loadMainDartJs();
-          }
-        }, 4000);
+        },
       });
-    } else {
-      // Service workers not supported. Just drop the <script> tag.
-      loadMainDartJs();
-    }
+    });
   </script>
 </body>
 </html>
