diff --git a/packages/slate-commons/src/types/Extension.ts b/packages/slate-commons/src/types/Extension.ts
index aa76324cd..7f4d5c73d 100644
--- a/packages/slate-commons/src/types/Extension.ts
+++ b/packages/slate-commons/src/types/Extension.ts
@@ -6,7 +6,6 @@ import type { Normalize } from './Normalize';
 import type { OnKeyDown } from './OnKeyDown';
 import type { RenderElement } from './RenderElement';
 import type { RenderLeaf } from './RenderLeaf';
-import type { Serialize } from './Serialize';
 import type { WithOverrides } from './WithOverrides';
 
 export interface Extension {
@@ -26,6 +25,5 @@ export interface Extension {
     onKeyDown?: OnKeyDown | null;
     renderElement?: RenderElement;
     renderLeaf?: RenderLeaf;
-    serialize?: Serialize;
     withOverrides?: WithOverrides;
 }
diff --git a/packages/slate-commons/src/types/Serialize.ts b/packages/slate-commons/src/types/Serialize.ts
deleted file mode 100644
index f5034a9f7..000000000
--- a/packages/slate-commons/src/types/Serialize.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import type { Descendant } from 'slate';
-
-/**
- * Cleanup editor value before reporting it to the outer world.
- * Useful to clean up internal temporary nodes and properties.
- */
-export type Serialize = (nodes: Descendant[]) => Descendant[];
diff --git a/packages/slate-editor/src/index.ts b/packages/slate-editor/src/index.ts
index ed646b37b..a543e4b44 100644
--- a/packages/slate-editor/src/index.ts
+++ b/packages/slate-editor/src/index.ts
@@ -31,7 +31,6 @@ import type {
     DefaultTextBlockEditor,
     ElementsEqualityCheckEditor,
     RichBlocksAwareEditor,
-    SerializingEditor,
 } from '#modules/editor';
 
 type Editor = BaseEditor &
@@ -39,7 +38,6 @@ type Editor = BaseEditor &
     DefaultTextBlockEditor<ParagraphNode> &
     ElementsEqualityCheckEditor &
     RichBlocksAwareEditor &
-    SerializingEditor &
     FlashEditor;
 
 declare module 'slate' {
diff --git a/packages/slate-editor/src/modules/editor/createEditor.ts b/packages/slate-editor/src/modules/editor/createEditor.ts
index 5100ff7c7..8a7b16f7d 100644
--- a/packages/slate-editor/src/modules/editor/createEditor.ts
+++ b/packages/slate-editor/src/modules/editor/createEditor.ts
@@ -18,7 +18,6 @@ import {
     withDeserializeHtml,
     withElementsEqualityCheck,
     withRichBlocks,
-    withSerialization,
 } from './plugins';
 
 export function createEditor(
@@ -42,7 +41,6 @@ export function createEditor(
         withDeserializeHtml(getExtensions),
         withRichBlocks(getExtensions),
         withElementsEqualityCheck(getExtensions),
-        withSerialization(getExtensions),
         ...overrides,
     ])(baseEditor);
 }
diff --git a/packages/slate-editor/src/modules/editor/index.ts b/packages/slate-editor/src/modules/editor/index.ts
index 0e899e93e..ac1745aa7 100644
--- a/packages/slate-editor/src/modules/editor/index.ts
+++ b/packages/slate-editor/src/modules/editor/index.ts
@@ -6,13 +6,11 @@ export {
     withDeserializeHtml,
     withElementsEqualityCheck,
     withRichBlocks,
-    withSerialization,
 } from './plugins';
 export type {
     DefaultTextBlockEditor,
     ElementsEqualityCheckEditor,
     RichBlocksAwareEditor,
-    SerializingEditor,
 } from './plugins';
 export type { EditorRef, EditorProps, Value } from './types';
 export { useEditorEvents } from './useEditorEvents';
diff --git a/packages/slate-editor/src/modules/editor/lib/isEditorValueEqual.test.ts b/packages/slate-editor/src/modules/editor/lib/isEditorValueEqual.test.ts
index 019508bea..b339d8942 100644
--- a/packages/slate-editor/src/modules/editor/lib/isEditorValueEqual.test.ts
+++ b/packages/slate-editor/src/modules/editor/lib/isEditorValueEqual.test.ts
@@ -1,5 +1,3 @@
-import { withoutNodes } from '@prezly/slate-commons';
-import { isQuoteNode } from '@prezly/slate-types';
 import { createEditor as createSlateEditor } from 'slate';
 
 import { createEditor } from '#modules/editor';
@@ -63,21 +61,4 @@ describe('isEditorValueEqual', () => {
 
         expect(isEditorValueEqual(editor, a, b)).toBe(true);
     });
-
-    it('should run pre-serialization cleanup from extensions', () => {
-        const editor = createEditor(createSlateEditor(), () => [
-            {
-                id: 'PreSerializationCleanup',
-                serialize: (nodes) => withoutNodes(nodes, isQuoteNode),
-            },
-        ]);
-
-        const a = [
-            { type: 'paragraph', children: [{ text: 'A wise man once said:' }] },
-            { type: 'block-quote', children: [{ text: 'Hello' }] },
-        ];
-        const b = [{ type: 'paragraph', children: [{ text: 'A wise man once said:' }] }];
-
-        expect(isEditorValueEqual(editor, a, b)).toBe(true);
-    });
 });
diff --git a/packages/slate-editor/src/modules/editor/plugins/index.ts b/packages/slate-editor/src/modules/editor/plugins/index.ts
index 0f8197aec..4acb31d67 100644
--- a/packages/slate-editor/src/modules/editor/plugins/index.ts
+++ b/packages/slate-editor/src/modules/editor/plugins/index.ts
@@ -5,4 +5,3 @@ export {
     withElementsEqualityCheck,
 } from './withElementsEqualityCheck';
 export { type RichBlocksAwareEditor, withRichBlocks } from './withRichBlocks';
-export { type SerializingEditor, withSerialization } from './withSerialization';
diff --git a/packages/slate-editor/src/modules/editor/plugins/withSerialization.ts b/packages/slate-editor/src/modules/editor/plugins/withSerialization.ts
deleted file mode 100644
index fce712343..000000000
--- a/packages/slate-editor/src/modules/editor/plugins/withSerialization.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-import type { Extension } from '@prezly/slate-commons';
-import type { SlateEditor } from '@udecode/plate-common';
-import type { Descendant } from 'slate';
-
-export interface SerializingEditor {
-    serialize(nodes: Descendant[]): Descendant[];
-}
-
-export function withSerialization(getExtensions: () => Extension[]) {
-    return function <T extends SlateEditor>(editor: T): T & SerializingEditor {
-        return Object.assign(editor, {
-            serialize(nodes: Descendant[]) {
-                return getExtensions().reduce(
-                    (result, extension) => extension.serialize?.(result) ?? result,
-                    nodes,
-                );
-            },
-        });
-    };
-}