uBlock Origin

uBlock Origin

Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.

  • uBlock Origin
  • uBlock Origin
  • uBlock Origin
  • uBlock Origin
  • uBlock Origin
  • uBlock Origin
What is uBlock Origin?
"uBlock Origin" is a comprehensive content blocking add-on for Firefox, prioritizing efficiency in both CPU and memory usage. It effectively blocks a variety of online nuisances including ads, trackers, and malicious URLs right out of the box using multiple pre-selected filter lists such as EasyList and EasyPrivacy. It offers users additional customizable options like annoyance lists and JavaScript blocking, alongside advanced features to tailor the browsing experience. This open-source tool is a creation for users, by users, with extensive documentation and a supportive community.
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Stats
This add-on was removed from Firefox Browser Add-ons on 2024-05-11
Users: 7,840,433
Version: 1.57.2 (Last updated: 2024-05-10)
Creation date: 2015-04-25
Weekly download count: 159,925
Firefox on Android: Yes
Risk impact: Very high risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 2
Permissions:
  • alarms
  • dns
  • menus
  • privacy
  • storage
  • tabs
  • unlimitedStorage
  • webNavigation
  • webRequest
  • webRequestBlocking
    • See more
Size: 3.86M
Stats date:

Other platforms

uBlock Origin development build
uBlock Origin development build (v1.58.1.111)
4.76 (103) 100,000
uBlock Origin
uBlock Origin (v1.57.2)
4.60 (2,012) 14,587,026
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Summary
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uBlock Origin is not an "ad blocker", it's a wide-spectrum content blocker with CPU and memory efficiency as a primary feature.

Out of the box, uBO blocks ads, trackers, coin miners, popups, etc. through the following lists of filters, enabled by default:

  • EasyList (ads)
  • EasyPrivacy (tracking)
  • Peter Lowe’s Ad server list (ads and tracking)
  • Online Malicious URL Blocklist
  • uBO's own lists

More lists are available for you to select if you wish:

  • EasyList Cookie
See more
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Effective ad blocking
  • Fast and lightweight
  • Regularly updated
Cons
  • Can sometimes break certain websites
Most mentioned
  • Effective ad blocking
  • Life saver
  • Perfect thanks
Recent reviews
Отличное расширение! В связке с другим адблокировщиком работает безупречно.
by Max, 2024-05-11
by Nunya, 2024-05-11
by OmegaSui, 2024-05-11
View all user reviews
Safety
Risk impact

uBlock Origin is very risky to use and it requires a lot of sensitive permissions. Avoid installing this add-on unless you absolutely trust this publisher.

Risk likelihood

uBlock Origin has earned a good reputation and can be trusted.

Upgrade to see risk analysis details