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 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.
Stats
Version: 1.58.0 (Last updated: 2024-07-23)
Creation date: 2015-04-25
Weekly download count: 169,765
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: 3.90M
Stats date:

Other platforms

uBlock Pro
uBlock Pro (v2.1.7)
4.20 (126) 20,000
uBlock Origin
uBlock Origin (v1.57.2)
4.60 (2,012) 14,587,026
Want to check extension ranking and stats more quickly for other Firefox add-ons? Install Chrome-Stats extension to view Chrome-Stats data as you browse the Firefox Browser Add-ons.
Chrome-Stats extension
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
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
  • Effectively blocks ads on complex sites like YouTube
  • Responsive development community for fixing filter issues
  • Works as intended with no issues
Cons
  • Some websites seek to block uBlock Origin
  • Difficulty updating filter in private mode
  • Unclear indication of updated filter status
Most mentioned
  • Effective ad blocking on complex sites like YouTube
  • Positive experience with uBlock Origin
  • Difficulty updating filter in private mode
Recent reviews

by FoxOnFire, 2024-07-25

by Louis, 2024-07-25
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