FDM Browser Extension — Privacy Policy

Last updated: 2026-06-17

The FDM Integration browser extension is a bridge between your browser and
the FDM download manager running on your own computer. It is designed so that
your data never leaves your machine.

What the extension accesses

To redirect a download into FDM with the correct context, the extension reads:

• the URL of the file (or video) you choose to download;
• the cookies, Referer, and User-Agent associated with that request,
  so that login-protected downloads keep working;
• request/response headers for the download, via the webRequest API;
• the URL of the page you are on, when the in-page video panel is shown;
• a small amount of local settings (e.g. whether auto-capture is on), stored
  with the browser storage API.

Where that data goes

All of the above is sent only to the FDM application on the same computer,
through the browser's native messaging
channel (com.fdm.native_host). From there FDM performs the download you asked
for.

• The extension does not send your data to the developer or to any remote or
  third-party server.
• The extension contains no analytics, telemetry, advertising, or tracking.
• Local settings stay in your browser profile on your device.

When you download a video, the URL and User-Agent are handed to FDM's local
helper, which runs yt-dlp on your machine; any network requests from that
point are the normal download traffic to the media site you chose — the same
as if you had downloaded it yourself.

DRM detection

The extension observes calls to requestMediaKeySystemAccess (the EME API) only
to detect DRM-protected media so it can decline cleanly. This check happens
entirely in the page and is not recorded or transmitted.

Permissions

Each permission the extension requests is used solely for the functionality
described above. The extension is open source; you can review exactly what it
does at <https://github.com/sahilf637/fdm>.

Data retention

The extension stores no history. It holds a download's details only for the
moment it takes to forward them to FDM, then discards them.

Contact

Questions about this policy: sahilfartyal3@gmail.com