diff --git a/src/preload.js b/src/preload.js
index 334006e..4290b19 100644
--- a/src/preload.js
+++ b/src/preload.js
@@ -9,7 +9,7 @@
  * - All IPC channels are explicitly whitelisted
  * - Prevents XSS from escalating to full system access
  *
- * @version 2.2.0
+ * @version 4.0.0
  */
 
 const { contextBridge, ipcRenderer } = require('electron');
@@ -117,7 +117,17 @@ const ALLOWED_SEND_CHANNELS = [
   'execute-code',
 
   // File open by path
-  'open-file-path'
+  'open-file-path',
+
+  // PDF editor from toolbar
+  'show-pdf-editor-from-toolbar',
+
+  // Menu triggers
+  'menu-open',
+  'export',
+
+  // Git diff
+  'git-diff'
 ];
 
 const ALLOWED_RECEIVE_CHANNELS = [
diff --git a/tests/preload.test.js b/tests/preload.test.js
index 60d75d9..9e4618f 100644
--- a/tests/preload.test.js
+++ b/tests/preload.test.js
@@ -14,12 +14,29 @@ describe('Preload Security', () => {
       'renderer-ready',
       'get-theme',
       'do-print',
+      'do-print-with-options',
       'export-with-options',
       'export-spreadsheet',
       'batch-convert',
       'select-folder',
       'universal-convert',
       'universal-convert-batch',
+      'image-convert',
+      'image-batch-convert',
+      'image-resize',
+      'image-compress',
+      'image-rotate',
+      'audio-convert',
+      'audio-batch-convert',
+      'audio-extract',
+      'audio-trim',
+      'audio-merge',
+      'video-convert',
+      'video-batch-convert',
+      'video-compress',
+      'video-trim',
+      'video-frames',
+      'video-gif',
       'get-header-footer-settings',
       'save-header-footer-settings',
       'browse-header-footer-logo',
@@ -30,7 +47,26 @@ describe('Preload Security', () => {
       'set-custom-start-page',
       'process-pdf-operation',
       'get-pdf-page-count',
-      'select-pdf-folder'
+      'select-pdf-folder',
+      'open-ascii-generator',
+      'open-table-generator',
+      'insert-generated-content',
+      'save-pasted-image',
+      'load-template',
+      'list-directory',
+      'open-file-path',
+      'git-status',
+      'git-stage',
+      'git-commit',
+      'git-log',
+      'git-diff',
+      'get-snippets',
+      'save-snippet',
+      'delete-snippet',
+      'execute-code',
+      'show-pdf-editor-from-toolbar',
+      'menu-open',
+      'export'
     ];
 
     const EXPECTED_RECEIVE_CHANNELS = [
@@ -54,18 +90,32 @@ describe('Preload Security', () => {
       'show-universal-converter-dialog',
       'show-table-generator',
       'show-pdf-editor-dialog',
+      'show-image-converter',
+      'show-audio-converter',
+      'show-video-converter',
+      'open-pdf-viewer',
       'conversion-status',
       'conversion-complete',
       'batch-progress',
+      'image-conversion-complete',
+      'audio-conversion-complete',
+      'video-conversion-complete',
       'folder-selected',
       'pdf-folder-selected',
       'header-footer-settings-data',
       'header-footer-logo-selected',
       'header-footer-logo-saved',
+      'header-footer-logo-cleared',
       'page-settings-data',
       'pdf-page-count',
       'pdf-operation-complete',
-      'pdf-operation-error'
+      'pdf-operation-error',
+      'pdf-operation-progress',
+      'show-ascii-generator-window',
+      'show-ascii-generator',
+      'show-table-generator-window',
+      'open-header-footer-dialog',
+      'insert-content'
     ];
 
     test('should define all expected send channels', () => {