diff --git a/lib/features/composer/presentation/widgets/web/web_editor_widget.dart b/lib/features/composer/presentation/widgets/web/web_editor_widget.dart
index f85878d6a..a8b28e4fc 100644
--- a/lib/features/composer/presentation/widgets/web/web_editor_widget.dart
+++ b/lib/features/composer/presentation/widgets/web/web_editor_widget.dart
@@ -119,6 +119,7 @@ class _WebEditorState extends State<WebEditorWidget> {
         shouldEnsureVisible: true,
         hint: '',
         darkMode: false,
+        cacheHTMLAssetOffline: true,
         initialText: widget.content,
         customBodyCssStyle: HtmlUtils.customCssStyleHtmlEditor(
           direction: widget.direction,
diff --git a/lib/features/identity_creator/presentation/identity_creator_view.dart b/lib/features/identity_creator/presentation/identity_creator_view.dart
index 44a982878..a41cc0623 100644
--- a/lib/features/identity_creator/presentation/identity_creator_view.dart
+++ b/lib/features/identity_creator/presentation/identity_creator_view.dart
@@ -504,6 +504,7 @@ class IdentityCreatorView extends GetWidget<IdentityCreatorController>
         shouldEnsureVisible: true,
         hint: '',
         darkMode: false,
+        cacheHTMLAssetOffline: true,
         initialText: initContent.isEmpty ? null : initContent,
         disableDragAndDrop: true,
         spellCheck: true,
diff --git a/lib/features/manage_account/presentation/vacation/vacation_view.dart b/lib/features/manage_account/presentation/vacation/vacation_view.dart
index b1439a0e3..d1f68cf4f 100644
--- a/lib/features/manage_account/presentation/vacation/vacation_view.dart
+++ b/lib/features/manage_account/presentation/vacation/vacation_view.dart
@@ -480,6 +480,7 @@ class VacationView extends GetWidget<VacationController> with RichTextButtonMixi
           htmlEditorOptions: html_editor_browser.HtmlEditorOptions(
             hint: '',
             darkMode: false,
+            cacheHTMLAssetOffline: true,
             initialText: controller.vacationMessageHtmlText,
             spellCheck: true,
             customBodyCssStyle: HtmlUtils.customCssStyleHtmlEditor(direction: AppUtils.getCurrentDirection(context))
diff --git a/lib/main.dart b/lib/main.dart
index af3d00786..bb5eb473b 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -16,6 +16,7 @@ import 'package:tmail_ui_user/main/pages/app_pages.dart';
 import 'package:tmail_ui_user/main/routes/app_routes.dart';
 import 'package:tmail_ui_user/main/routes/route_navigation.dart';
 import 'package:tmail_ui_user/main/utils/app_utils.dart';
+import 'package:tmail_ui_user/main/utils/asset_preloader.dart';
 import 'package:url_strategy/url_strategy.dart';
 import 'package:worker_manager/worker_manager.dart';
 
@@ -33,7 +34,9 @@ Future<void> runTmail() async {
      MainBindings().dependencies(),
      HiveCacheConfig.instance.setUp(),
      Executor().warmUp(log: BuildUtils.isDebugMode),
-     AppUtils.loadEnvFile()
+     AppUtils.loadEnvFile(),
+     if (PlatformInfo.isWeb)
+       AssetPreloader.preloadHtmlEditorAssets(),
   ]);
   await HiveCacheConfig.instance.initializeEncryptionKey();
   
diff --git a/lib/main/utils/app_config.dart b/lib/main/utils/app_config.dart
index d93afa747..1e0a7b07b 100644
--- a/lib/main/utils/app_config.dart
+++ b/lib/main/utils/app_config.dart
@@ -7,10 +7,13 @@ import 'package:tmail_ui_user/features/login/data/network/config/oidc_constant.d
 import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
 
 class AppConfig {
+  const AppConfig._();
+
   static const int defaultMinInputLengthAutocomplete = 3;
   static const int warningAttachmentFileSizeInMegabytes = 10;
   static const int defaultLimitAutocomplete = 8;
 
+  static const String envFileName = 'env.file';
   static const String appDashboardConfigurationPath = "configurations/app_dashboard.json";
   static const String appFCMConfigurationPath = "configurations/env.fcm";
   static const String iOSKeychainSharingGroupId = 'KUT463DS29.com.linagora.ios.teammail.shared';
diff --git a/lib/main/utils/app_utils.dart b/lib/main/utils/app_utils.dart
index 6c329c12b..2afe30ba9 100644
--- a/lib/main/utils/app_utils.dart
+++ b/lib/main/utils/app_utils.dart
@@ -11,17 +11,16 @@ import 'package:tmail_ui_user/main/utils/app_config.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 class AppUtils {
-
-  static const String envFileName = 'env.file';
+  const AppUtils._();
 
   static Future<void> loadEnvFile() async {
-    await dotenv.load(fileName: envFileName);
+    await dotenv.load(fileName: AppConfig.envFileName);
     final mapEnvData = Map<String, String>.from(dotenv.env);
    try {
-     await AppUtils.loadFcmConfigFileToEnv(currentMapEnvData: mapEnvData);
+     await loadFcmConfigFileToEnv(currentMapEnvData: mapEnvData);
    } catch (e) {
      logError('AppUtils::loadEnvFile:loadFcmConfigFileToEnv: Exception = $e');
-     await dotenv.load(fileName: envFileName);
+     await dotenv.load(fileName: AppConfig.envFileName);
    }
   }
 
diff --git a/lib/main/utils/asset_preloader.dart b/lib/main/utils/asset_preloader.dart
new file mode 100644
index 000000000..e2ee5a61f
--- /dev/null
+++ b/lib/main/utils/asset_preloader.dart
@@ -0,0 +1,23 @@
+
+import 'package:core/utils/app_logger.dart';
+import 'package:html_editor_enhanced/utils/html_editor_constants.dart';
+import 'package:html_editor_enhanced/utils/html_editor_utils.dart';
+
+class AssetPreloader {
+  const AssetPreloader._();
+
+  static Future<void> preloadHtmlEditorAssets() async {
+    try {
+      await Future.wait([
+        HtmlEditorUtils.loadAsset(HtmlEditorConstants.summernoteHtmlAssetPath),
+        HtmlEditorUtils.loadAsset(HtmlEditorConstants.jqueryAssetPath),
+        HtmlEditorUtils.loadAsset(HtmlEditorConstants.summernoteCSSAssetPath),
+        HtmlEditorUtils.loadAsset(HtmlEditorConstants.summernoteJSAssetPath),
+        HtmlEditorUtils.loadAsset(HtmlEditorConstants.summernoteFontEOTAssetPath),
+        HtmlEditorUtils.loadAsset(HtmlEditorConstants.summernoteFontTTFAssetPath),
+      ]);
+    } catch (e) {
+      logError('AssetPreloader::preloadHtmlEditorAssets:Exception = $e');
+    }
+  }
+}
\ No newline at end of file