uBlock Origin

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

uBlock Origin - Wide-spectrum Content Blocker Add-on for Firefox

uBlock Origin is a high-performance, wide-spectrum Firefox add-on. Beyond being just an 'ad blocker', it excels in blocking a wide array of content, including ads, trackers, coin miners and popups instantly. Pre-configured with several filter lists like EasyList (for ads) and EasyPrivacy (tracking), it offers immense customization to the users. The add-on is a unique blend of CPU and memory efficiency, aiming to deliver a seamless browsing experience.

Add-on stats

Version: 1.61.2 (Last updated: 2024-12-21)
Creation date: 2015-04-25
Weekly download count: 237,014
Firefox on Android: Yes
Risk impact: Very high risk impact
Risk likelihood:
Manifest version: 2
Permissions:
  • alarms
  • dns
  • menus
  • privacy
  • storage
  • tabs
  • unlimitedStorage
  • webNavigation
  • webRequest
  • webRequestBlocking
  • See more
Size: 3.95M

Other platforms

uBlock Origin (v1.61.2)
4.68 (32,436) 39,000,000
JX2 Origin (v1.9)
5.00 (2,236) 109,774
uBlock Origin (v1.61.2)
4.50 (2,199) 14,493,932
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Add-on summary

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

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
  • Open-source and community-driven development
  • Highly recommended for enhancing web usability
  • Offers a wide range of features and flexibility
Cons
    Most mentioned
    • Life-changing extension
    • Quick problem resolution by community and developers
    User reviews

    by Aopex, 2024-12-22

    Truly a must!
    View all user reviews

    Add-on safety

    Risk impact

    uBlock Origin requires a lot of sensitive permissions. Exercise caution before installing.

    Risk likelihood

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

    Upgrade to see risk analysis details