uBlock Origin

Name: uBlock Origin
Rating: 4.7995 (21823 reviews)
Author: Raymond Hill

By: Raymond Hill

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

Download

Install

Features & Capabilities

uBlock Origin is not just an ad blocker—it's a wide-spectrum content blocker designed for efficiency. By default, it blocks ads, trackers, coin miners, and popups using proven filter lists such as EasyList, EasyPrivacy, Peter Lowe’s Ad Server List, and more.

Beyond its defaults, you can add extra lists, block JavaScript locally or globally, and customize global or local rules with advanced settings. The project is free and open source under GPLv3, maintained by a community of contributors who share filter lists and documentation to benefit all users.

User Growth & Download Statistics

Add-on Privacy & Security Open Source Developer Tools Content Programming

By:

Raymond Hill

Daily users:

10,667,452 26.36K

Rating:

4.80

(21,823) 9 new ratings

Version:

1.71.0 Last updated: 2026-06-15

Version code:

6269867

Creation date:

2015-04-25

Risk:

Permissions:

Content scripts matches:

*
easylist.to
*.fanboy.co.nz
filterlists.com
forums.lanik.us
github.com
*.github.io
ublockorigin.github.io
*.reddit.com

Size:

4.30MB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-16

Compare stats and ranking:

Ranking

# 1

Other rankings

#1 in Privacy & Security

#1 in block ads keyword 96

#1 in blog keyword 7

#1 in memory keyword 15

#1 in mock keyword 15

Upgrade to see more rankings

Other platforms

uBlock Origin (v1.71.0)

14,000,000 4.70

(35,452)

uBlock Origin (v1.71.0)

14,411,051 4.50

(2,637)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Raymond Hill

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/ublock-origin/

Website:

https://old.reddit.com/r/uBlockOrigin/

Permission Change History

2024-01-08: Version 1.54.0 → 1.55.0

Add Permissions: alarms

2023-05-03: Version 1.49.0 → 1.49.2

Remove Permissions: alarms

2023-04-26: Version 1.48.4 → 1.49.0

Add Permissions: alarms

User Reviews

User reviews consistently regard uBlock Origin for Firefox as a powerful and essential privacy/ad-blocking extension, praised for its effectiveness and reliability. The key multi-review points are its strength as a blocker and its strong customization options, including extra filter lists and manual blocking rules. Some reviewers note a learning curve to master the settings, but many say the payoff is substantial in performance and protection. A few mentions of site-specific quirks or redundancy with other privacy tools exist, but overall sentiment is very positive.

Pros

Powerful and essential privacy/ad-blocking extension; widely praised as one of the best for Firefox.
Highly customizable with support for additional filter lists and manual blocking rules.

Cons

Recent reviews

by co*****, 2026-06-16

by Au*****, 2026-06-16

by Fi*****, 2026-06-16

View all user reviews ›

Is uBlock Origin Safe?

Risk impact

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, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

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

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. 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 Firefox add-on.

uBlock Origin has earned a good reputation and 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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