diff --git a/packages/core/src/ExtensionManager.ts b/packages/core/src/ExtensionManager.ts
index 9a152bf0..2da65cd5 100644
--- a/packages/core/src/ExtensionManager.ts
+++ b/packages/core/src/ExtensionManager.ts
@@ -3,6 +3,7 @@ import { keymap } from 'prosemirror-keymap'
 // import { Schema, Node as ProsemirrorNode } from 'prosemirror-model'
 import { inputRules } from 'prosemirror-inputrules'
 // import { EditorView, Decoration } from 'prosemirror-view'
+import { Schema } from 'prosemirror-model'
 import { Editor } from './Editor'
 // import capitalize from './utils/capitalize'
 import { Extensions } from './types'
@@ -13,11 +14,14 @@ export default class ExtensionManager {
 
   editor: Editor
 
+  schema: Schema
+
   extensions: Extensions
 
   constructor(extensions: Extensions, editor: Editor) {
     this.editor = editor
     this.extensions = extensions
+    this.schema = getSchema(this.extensions)
 
     this.extensions.forEach(extension => {
       const context = {
@@ -32,10 +36,6 @@ export default class ExtensionManager {
     })
   }
 
-  get schema() {
-    return getSchema(this.extensions)
-  }
-
   get plugins(): Plugin[] {
     const plugins = this.extensions
       .map(extension => {
diff --git a/packages/core/src/utils/getSchema.ts b/packages/core/src/utils/getSchema.ts
index 47fbf6aa..e64a9873 100644
--- a/packages/core/src/utils/getSchema.ts
+++ b/packages/core/src/utils/getSchema.ts
@@ -3,6 +3,17 @@ import { Extensions } from '../types'
 import splitExtensions from './splitExtensions'
 import getAttributesFromExtensions from './getAttributesFromExtensions'
 import getRenderedAttributes from './getRenderedAttributes'
+import isEmptyObject from './isEmptyObject'
+
+function cleanUpSchemaItem(data: any) {
+  return Object.fromEntries(Object.entries(data).filter(([key, value]) => {
+    if (key === 'attrs' && isEmptyObject(value)) {
+      return false
+    }
+
+    return value !== null && value !== undefined
+  }))
+}
 
 export default function getSchema(extensions: Extensions): Schema {
   const allAttributes = getAttributesFromExtensions(extensions)
@@ -16,7 +27,7 @@ export default function getSchema(extensions: Extensions): Schema {
 
     const attributes = allAttributes.filter(attribute => attribute.type === extension.name)
 
-    const schema: NodeSpec = {
+    const schema: NodeSpec = cleanUpSchemaItem({
       content: extension.content,
       marks: extension.marks,
       group: extension.group,
@@ -37,7 +48,7 @@ export default function getSchema(extensions: Extensions): Schema {
       attrs: Object.fromEntries(attributes.map(attribute => {
         return [attribute.name, { default: attribute?.attribute?.default }]
       })),
-    }
+    })
 
     return [extension.name, schema]
   }))
@@ -49,7 +60,7 @@ export default function getSchema(extensions: Extensions): Schema {
 
     const attributes = allAttributes.filter(attribute => attribute.type === extension.name)
 
-    const schema: MarkSpec = {
+    const schema: MarkSpec = cleanUpSchemaItem({
       inclusive: extension.inclusive,
       excludes: extension.excludes,
       group: extension.group,
@@ -64,7 +75,7 @@ export default function getSchema(extensions: Extensions): Schema {
       attrs: Object.fromEntries(attributes.map(attribute => {
         return [attribute.name, { default: attribute?.attribute?.default }]
       })),
-    }
+    })
 
     return [extension.name, schema]
   }))
diff --git a/packages/core/src/utils/isEmptyObject.ts b/packages/core/src/utils/isEmptyObject.ts
new file mode 100644
index 00000000..7d28f3d9
--- /dev/null
+++ b/packages/core/src/utils/isEmptyObject.ts
@@ -0,0 +1,3 @@
+export default function isEmptyObject(object = {}) {
+  return Object.keys(object).length === 0 && object.constructor === Object
+}