uBlock Origin

Name: uBlock Origin
Rating: 4.7965 (19883 reviews)
Author: Raymond Hill

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

uBlock Origin is not just an ad blocker; it's a comprehensive content blocker focused on CPU and memory efficiency. With built-in filters like EasyList and EasyPrivacy, it blocks ads, trackers, and malicious URLs effortlessly. Users can customize their blocking experience with a variety of additional filter lists and features, including local or global JavaScript blocking options. Enjoy efficient, fast browsing today! This free and open-source extension is maintained by a dedicated community of users, highlighting the importance of supporting the filter lists that enhance your browsing experience.

Key Features:
- Blocks ads, trackers, and more
- Extensive filter lists available
- Advanced blocking options for power users
Open Source: License under GPLv3, community-driven development. Visit the documentation and community support links for more information.

Download

By: Raymond Hill

Daily users: 9,585,724

13.92K

Rating: 4.80

(19,883)

60 new ratings

Version: 1.63.2 (Last updated: 2025-03-25)

Version code: 5914174

Creation date: 2015-04-25

Weekly download count: 254,561

Firefox on Android: Yes

Risk:

Permissions:

alarms
dns
menus
privacy
storage
tabs
unlimitedStorage
webNavigation
webRequest
webRequestBlocking

Size: 4.01M

URLs: Website ,Privacy policy

Full description: See detailed description

Source: Firefox Browser Add-ons

Updated: a day ago

Ranking

# 1

Other rankings

#1 in Privacy & Security

#1 in block ads keyword 72

#1 in blog keyword 74

#1 in memory keyword 54

#1 in mock keyword 28

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User reviews

Pros

Highly effective at blocking ads
Consistently receives praise for performance and reliability
Active and responsive development team
Widely regarded as the best ad blocker available
Long-term user satisfaction, especially among Linux users

Cons

Recent version caused browser freezing issues
Requires manual intervention to resolve freezing after prolonged use

Most mentioned

Overall effectiveness as an ad blocker
User satisfaction and loyalty
Browser compatibility issues with newer versions

These summaries are automatically generated weekly using AI based on recent user reviews. User reviews may be inaccurate, spammy, or outdated.

User reviews

unico ad blocker necessario nel tuo pc, veloce intuitivo e falice utilizzare il blocca elemento. spettacolo.

by Firefox user 18905257, 2025-03-26

by Vadim ZVS, 2025-03-26

by Firefox user 18905010, 2025-03-26

View all user reviews

Add-on safety

Risk impact

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

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

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

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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