Is uBlock Origin safe?

Our pick

Yes. uBlock Origin is a legitimate tool and IsLegit's pick for: Block ads and trackers. The best ad and tracker blocker. Full version on Firefox.

Open uBlock Origin

Report card

Site checked 16 Oct 2026

Free
Open source
Secure connection (HTTPS)
Homepage contacts no ad networks
No known trackers on the homepage
No paid allowlist
Light on memory

Works on: Firefox · Free

Where it shows up

Block ads and trackers Our pick

Alternatives

uBlock Origin Lite

Good

The version Chrome still allows.

Free Chrome No ads · 2 trackers

Report card Open

Brave

Good

Chrome-like browser with ad blocking built in.

Free Windows, Mac, Linux, Android, iPhone No ads · No trackers

Report card Open

AdGuard

Good

Ad blocking for Safari and phones.

Free plan + paid Safari, Android, Windows, Mac, iPhone No ads · No trackers

Report card Open

All uBlock Origin alternatives

Questions

Does uBlock Origin show ads or track you?: Its homepage loaded no ad networks and no known trackers in our automated check on 16 Oct 2026.
Is uBlock Origin free?: Yes, uBlock Origin is free.