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Best Firefox Privacy Browser Extensions - Tracking Blocker

Private alternatives to Adblock Plus, vetted against our public criteria.

Everyday Anyone should use these
Hardened If you will trade some convenience

Firefox is already one of the more privacy-respecting browsers, and a small set of extensions sharpens it further. The right ones block ads and trackers, strip tracking parameters out of links, and clean up cookies after you leave a site. These are the ones worth installing. On another browser? See the all-browsers, Chrome, and Safari lists.

A lean set beats a long list

One strong content blocker, uBlock Origin, does most of the work: ads, trackers, and malware domains in a single extension. Add a couple of targeted tools for what it does not cover, like stripping tracking parameters from URLs or clearing cookies automatically. Avoid stacking ten overlapping extensions, since each is more to trust and more that can break a page.

Firefox already does a lot

Firefox ships with tracking protection and sensible defaults, so you need fewer extensions here than on Chrome. Rely on its built-in protections, add uBlock Origin, and only reach for extras that fill a specific gap. A smaller set of extensions also leaves a less distinctive fingerprint.

What to look for

Open-source extensions with an active maintainer and a narrow, clear purpose. Be wary of “all-in-one privacy” extensions that ask for broad permissions and a subscription; they often do less than uBlock Origin alone while seeing everything you browse.

Frequently asked

Do I need these if Firefox already blocks trackers?
Firefox's built-in protection is a solid base, but it does not block ads or cover every tracker. Adding uBlock Origin closes most of the remaining gap. Lean on the built-in protections first, then add only what you need.
Can extensions track me?
They can, which is why the open-source, single-purpose ones here are worth trusting and broad-permission all-in-one suites are not. An unusual set of extensions can also make your browser easier to fingerprint.
What is the minimum set?
For most people, Firefox's tracking protection plus uBlock Origin is enough. Add a link cleaner or cookie auto-deleter only if you want that specific behaviour.