uBlock Origin

uBlock Origin

Finally, an efficient blocker. Easy on CPU and memory.

  • uBlock Origin
  • uBlock Origin
  • uBlock Origin
  • uBlock Origin
What is uBlock Origin?
uBlock Origin is a Chrome extension primarily designed for blocking unwanted content. It's not just an ad blocker, but offers a wide spectrum of actions, including ads and tracking, malware blocking, cookie warnings, and more, while being light on CPU and memory. It provides user flexibility in blocking content, enabling you to select the filters and create your own rules. All of this, for free and with transparency, as it’s an open-source project.
Users: 34,000,000+
Version: 1.58.0 (Last updated: 2024-05-23)
Creation date: 2020-06-28
Risk impact: High risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 2
  • alarms
  • contextMenus
  • privacy
  • storage
  • tabs
  • unlimitedStorage
  • webNavigation
  • webRequest
  • webRequestBlocking
  • <all_urls>
Size: 3.94M
Stats date:

Other platforms

uBlock Origin
uBlock Origin (v1.58.0)
4.79 (18,042) 7,310,837+
uBlock Origin
uBlock Origin (v1.57.2)
4.60 (2,007) 16,571,841+
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Analyze keywords

IMPORTANT: uBlock Origin is completely unrelated to the site "ublock.org".

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, these lists of filters are loaded and enforced:

  • uBlock Origin filter lists
  • EasyList (ads)
  • EasyPrivacy (tracking)
  • Peter Lowe’s Ad server list (ads and tracking)
  • Online Malicious URL Blocklist

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

See more
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Blocks ads effectively
  • Open source
  • Works well with most websites
  • Lightweight and low impact on performance
  • Some users reported issues with YouTube ads
  • May not work with Twitch
  • Potential for conflicts on beta versions of Chromium
Most mentioned
  • Effectiveness in blocking ads
  • Open source nature
  • Issues with YouTube ads
  • Lightweight and low impact on performance
Recent reviews
Thank You Ublock team. You have saved my dozens of hours. ❤️
by Kaustubh Kadam Kaustubh Kadam, 2024-07-18

by 大嶋宏和 大嶋宏和, 2024-07-18

by Anh Vo Anh Vo, 2024-07-18
View all user reviews
Risk impact

uBlock Origin is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install uBlock Origin if you trust the publisher.

Risk likelihood

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

Upgrade to see risk analysis details
Promo images
uBlock Origin small promo image
Small promo image
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