Privacy.
Last updated: 2026-05-10
Margin is a hosted service at margin.pub. The full source is public on GitHub under the GPL v3.
What Margin stores
Per-user Google OAuth refresh tokens (envelope-encrypted with a per-row data key wrapped by the server's master key). Better Auth session rows for each signed-in browser. Project metadata, document snapshots you explicitly track, their comments and suggestion threads.
What Margin never sees
Any Google Doc you have not explicitly picked from Drive Picker or
created from Margin. The OAuth scope is drive.file;
the backend has no read access to your broader Drive.
Telemetry
None. The site has no analytics. The extension talks only to the Margin backend. The backend makes no third-party calls besides Google's Drive and Docs APIs.