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Privacy Badger is a browser extension that automatically learns to block invisible trackers. Instead of keeping lists of what to block, Privacy Badger learns by watching which domains appear to be tracking you as you browse the Web.

Privacy Badger sends the Do Not Track signal with your browsing. If trackers ignore your wishes, your Badger will learn to block them. Privacy Badger starts blocking once it sees the same tracker on three different websites.

Besides automatic tracker blocking, Privacy Badger removes outgoing link click tracking on Facebook and Google, with more privacy protections on the way.

To learn more, see the FAQ on Privacy Badger's homepage.


We're glad you want to help! Please see our contributor guide.

This project is governed by EFF's Public Projects Code of Conduct.

Getting in touch

Besides using our GitHub issue tracker, you could send us an email, or join the Privacy Badger mailing list.

We also hold public meetings using Jitsi audio conferencing:

  • Mondays at 10:30 AM PST
  • Thursdays at 11:30 AM PST


Privacy Badger is licensed under the GPLv3. See LICENSE for more details.

Privacy Badger is a project of the Electronic Frontier Foundation.

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