Privacy Badger
Free browser extension from EFF that learns to block hidden trackers as you browse.
Best for
Anyone who wants free, automatic tracker blocking from a trusted nonprofit without managing filter lists.
Skip if
You need Safari support today or want a combined ad-and-tracker blocker in one extension.
What is Privacy Badger?
Privacy Badger is a free browser extension built by the Electronic Frontier Foundation (EFF), a digital rights nonprofit. Instead of relying on a static blocklist, it algorithmically watches for third-party domains that appear to be tracking you across multiple sites and then blocks them, which lets it adapt to new trackers over time rather than waiting on curated filter lists. Beyond tracker blocking, Privacy Badger sends Global Privacy Control and Do Not Track signals, strips outgoing click-tracking on sites like Facebook and Google, offers click-to-activate placeholders for embedded social widgets, and includes canvas fingerprinting detection. It runs on Chrome, Firefox (including Firefox for Android), Edge, Opera, and Brave, with Safari support in development.
SpecificationsAI-estimated
Key Features of Privacy Badger
Use Cases for Privacy Badger
Everyday tracker blocking
Privacy-conscious users install it to automatically cut down on cross-site tracking while browsing normally.
Reducing social widget tracking
Click-to-activate placeholders stop embedded Facebook/Twitter widgets from tracking visitors before they're clicked.
Signaling opt-out preferences
Sends Global Privacy Control and Do Not Track signals so compliant sites can honor a user's tracking opt-out.
Complementing other privacy tools
Often run alongside a VPN or ad blocker as one layer of a broader personal privacy setup.
Pros & Cons of Privacy Badger
Pros
- Completely free with no paid tier or account required
- Built and maintained by EFF, a well-known digital rights nonprofit
- Adapts automatically to new trackers instead of relying only on static lists
- Available across most major browsers, including mobile Firefox and Edge
Cons
- No Safari support yet (listed as in development)
- As a single-purpose tracker blocker, it doesn't replace a full ad blocker or VPN
- Algorithmic detection can occasionally need a yellowlist exception to avoid breaking a site
Frequently Asked Questions
Is Privacy Badger free?
Yes, it is completely free with no paid tier.
Who makes Privacy Badger?
It is developed by the Electronic Frontier Foundation (EFF), a digital rights nonprofit.
Which browsers does it support?
Chrome, Firefox, Firefox for Android, Edge, Edge for Android, Opera, and Brave; Safari support is in development.
How is it different from an ad blocker?
It specifically targets tracking behavior rather than all ads, using algorithmic detection instead of a manual filter list.
Pricing Overview
View full pricing →Detailed plans are not listed. Visit the official website for pricing information.
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