uBlock Origin

Browser extension in Ad & tracker blockers

Efficient, open-source content blocker that removes ads, trackers and malware domains using community filter lists.

The full version runs on Firefox; Chrome now only allows the reduced uBlock Origin Lite.

Privacy passport

5 of 5 checks

No trackingYesNo ads and no third-party trackers or analytics.
Open sourceYesApps and server code are public, so anyone can check them.
Only you can read itOn deviceYour data stays on your own device.
No accountYesWorks without signing up.
FreeYesFree to use.

Where it stands among 14 ad and tracker blockers

No tracking

Yes

Partly

Not stated

Open source

Yes

Partly

Only you can read it

Yes

Not applicable

No account

Yes

Free

Yes

Listed in

Ad & tracker blockersOur pickBest blocker for Firefox, light on memory

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