uBlock Origin promo image

uBlock Origin uBlock Origin

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

uBlock Origin is a featured Chrome extension by Raymond Hill (gorhill). It has 10,000,000+ weekly active users and an average rating of 4.68. uBlock Origin is similar to uBlock - free ad blocker and Privacy Badger. The latest version is 1.44.4 and was updated 10 days ago. uBlock Origin is available in English and 44 other languages. Within Chrome Web Store, its overall ranking is #13.

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.

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Risk impact

uBlock Origin requires a lot of risky permissions. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install uBlock Origin if you trust the publisher.

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

uBlock Origin is well trusted and should be safe to install.

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Chrome extension, especially ones with higher risk impact and/or higher risk likelihood.

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User reviews

by Nurim Jomart Nurim Jomart, 2022-09-27

by Nitin Malviya Nitin Malviya, 2022-09-27
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  "update_url": "https://clients2.google.com/service/update2/crx",
  "author": "Raymond Hill & contributors",
  "background": {
    "page": "background.html"
  "browser_action": {
    "default_icon": {
      "16": "img/icon_16.png",
      "32": "img/icon_32.png"