A VS Code extension that brings Word-style inline commenting to Markdown files — comments are stored directly inside the .md file as invisible HTML comments, so they travel with the document through git.
Features
WYSIWYG editing — Milkdown-powered rich text editor renders Markdown in-place
Inline comments — comments are anchored to text and stored as <!-- COMMENT {...} --> tags inside the file; invisible to Markdown renderers, visible in the panel
Threaded replies — reply to any comment thread
Resolve threads — mark threads resolved (Word-style); toggle visibility of resolved comments
Likes — like comments and replies
Bulk actions — resolve all or delete all comments at once
Author detection — author name and email are read from git config; override in settings
Keyboard shortcut — Ctrl+Shift+; (macOS: Cmd+Shift+;) to add a comment at the cursor
Usage
Open any .md file and switch the editor to Markdown Collaboration Editor via the editor-picker dropdown (top-right of the editor tab). The editor panel opens with the rendered Markdown on the left and the comment panel on the right.
Adding a comment
Select text in the editor
Press Ctrl+Shift+; (macOS: Cmd+Shift+;), or run Markdown Collaboration Editor: Add Comment from the Command Palette
Type your comment and press Save
Replying and resolving
Click a comment card to expand it and write a reply
Use the ... menu on a comment card to Edit, Resolve, or Delete a thread
Comment Storage Format
Comments are stored inline in the Markdown file as HTML comments and are never visible in rendered output:
Some text<!-- COMMENT {"id":"a1b2c3","author":"Jane Doe","body":"Please expand this.","date":"2026-04-20T10:00:00.000Z"} -->
Replies and likes are stored in the same JSON payload. The format is git-friendly — comments diff and merge naturally alongside prose.
Settings
Setting
Default
Description
mdCollabEditor.authorName
""
Override the author name for new comments (defaults to git user.name)
mdCollabEditor.authorEmail
""
Override the author email (defaults to git user.email)
