diff --git a/src/lib/editor/extensions.ts b/src/lib/editor/extensions.ts
new file mode 100644
index 0000000..4b57fe8
--- /dev/null
+++ b/src/lib/editor/extensions.ts
@@ -0,0 +1,21 @@
+import Document from '@tiptap/extension-document';
+import Paragraph from '@tiptap/extension-paragraph';
+import Text from '@tiptap/extension-text';
+import Bold from '@tiptap/extension-bold';
+import Italic from '@tiptap/extension-italic';
+import Underline from '@tiptap/extension-underline';
+import Heading from '@tiptap/extension-heading';
+import History from '@tiptap/extension-history';
+import Placeholder from '@tiptap/extension-placeholder';
+
+export const extensions = [
+  Document,
+  Paragraph,
+  Text,
+  Bold,
+  Italic,
+  Underline,
+  Heading.configure({ levels: [1, 2, 3] }),
+  History,
+  Placeholder.configure({ placeholder: 'Start typing…' }),
+];