diff --git a/packages/super-editor/src/components/SuperEditor.vue b/packages/super-editor/src/components/SuperEditor.vue
index 5f4fe49690..d0b9760e01 100644
--- a/packages/super-editor/src/components/SuperEditor.vue
+++ b/packages/super-editor/src/components/SuperEditor.vue
@@ -117,6 +117,7 @@ const initEditor = async ({ content, media = {}, mediaFiles = {}, fonts = {} } =
     element: editorElem.value,
     fileSource: props.fileSource,
     extensions: getExtensions(),
+    externalExtensions: props.options.externalExtensions,
     documentId: props.documentId,
     content,
     media,
diff --git a/packages/super-editor/src/core/Editor.js b/packages/super-editor/src/core/Editor.js
index c5567f0830..d51a827bc8 100644
--- a/packages/super-editor/src/core/Editor.js
+++ b/packages/super-editor/src/core/Editor.js
@@ -68,6 +68,7 @@ export class Editor extends EventEmitter {
     scale: 1,
     annotations: false,
     isInternal: false,
+    externalExtensions: [],
     onBeforeCreate: () => null,
     onCreate: () => null,
     onUpdate: () => null,
@@ -429,12 +430,13 @@ export class Editor extends EventEmitter {
     const allowedExtensions = ['extension', 'node', 'mark'];
 
     const coreExtensions = [Editable, Commands, EditorFocus, Keymap];
+    const externalExtensions = this.options.externalExtensions || [];
 
     const allExtensions = [...coreExtensions, ...this.options.extensions].filter((e) =>
       allowedExtensions.includes(e?.type),
     );
 
-    this.extensionService = ExtensionService.create(allExtensions, this);
+    this.extensionService = ExtensionService.create(allExtensions, externalExtensions, this);
   }
 
   /**
@@ -524,7 +526,6 @@ export class Editor extends EventEmitter {
    */
   #generatePmData() {
     let doc;
-  
     try {
       const { mode, fragment, isHeadless, content, loadFromSchema } = this.options;
       
@@ -881,7 +882,7 @@ export class Editor extends EventEmitter {
    * Get page styles
    */
   getPageStyles() {
-    return this.converter?.pageStyles;
+    return this.converter?.pageStyles || {};
   }
 
   /**
diff --git a/packages/super-editor/src/core/ExtensionService.js b/packages/super-editor/src/core/ExtensionService.js
index 971a4f303e..6f462f7702 100644
--- a/packages/super-editor/src/core/ExtensionService.js
+++ b/packages/super-editor/src/core/ExtensionService.js
@@ -16,11 +16,15 @@ export class ExtensionService {
 
   extensions;
 
+  externalExtensions = [];
+
   splittableMarks = [];
 
-  constructor(extensions, editor) {
+  constructor(extensions, userExtensions, editor) {
     this.editor = editor;
-    this.extensions = ExtensionService.getResolvedExtensions(extensions);
+
+    this.externalExtensions = userExtensions || [];
+    this.extensions = ExtensionService.getResolvedExtensions([...extensions, ...this.externalExtensions]);
     this.schema = Schema.createSchemaByExtensions(this.extensions, editor);
     this.#setupExtensions();
   }
diff --git a/packages/superdoc/src/SuperDoc.vue b/packages/superdoc/src/SuperDoc.vue
index b3e693953d..2e701587c3 100644
--- a/packages/superdoc/src/SuperDoc.vue
+++ b/packages/superdoc/src/SuperDoc.vue
@@ -251,6 +251,7 @@ const editorOptions = (doc) => {
     isNewFile: doc.isNewFile || false,
     handleImageUpload: proxy.$superdoc.config.handleImageUpload,
     telemetry: proxy.$superdoc.telemetry,
+    externalExtensions: proxy.$superdoc.config.editorExtensions || [],
   };
 
   return options;