uBlock Origin

uBlock Origin

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

uBlock Origin promo image
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.

Version: 1.56.0 (Last updated: 2024-02-22)
Creation date: 2020-06-28
Risk impact: High risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 2
  • contextMenus
  • privacy
  • storage
  • tabs
  • unlimitedStorage
  • webNavigation
  • webRequest
  • webRequestBlocking
  • <all_urls>
Size: 3.86M
Stats date:

Other platforms

uBlock Origin
uBlock Origin (v1.56.0)
4.79 (17,327) 7,854,307
uBlock Origin
uBlock Origin (v1.56.0)
4.60 (1,978) 15,662,457+
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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 Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Effective ad blocking on various websites
  • Simple to install and use
  • Saves time and helps avoid impulse purchases
  • Blocks pop-ups and other hidden elements
  • Generally enhances user experience on the internet
  • Can slow down YouTube performance
  • Issues with displaying ads correctly on YouTube
  • Problems with stretching the video player on YouTube
  • May block cashback sites and cause issues with redirects
  • Unable to block all types of ads, with some sneaking through
Most mentioned
  • Makes YouTube slow
  • Problems with ad blocking on YouTube
  • Difficulty with updated ads on YouTube
  • Issues with video player layout on YouTube
  • Effective at blocking ads in general
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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