uBlock Origin

Name: uBlock Origin
Rating: 4.8017 (22201 reviews)
Author: Raymond Hill

By: Raymond Hill Add-on

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

Overview

Firefox Add-ons Store

Daily users

11,335,814 ▲ 6.22K

Data as of 2026-10-13

Rating:

4.80 +23

(22,201)

Version:

1.75.0

Last updated: 2026-10-11

Features & Capabilities

uBlock Origin is a free, open-source, wide-spectrum content blocker designed to use minimal CPU and memory. It blocks ads, trackers, popups, coin miners, and malicious URLs using trusted filter lists such as EasyList, EasyPrivacy, Peter Lowe’s Ad server list, and uBO’s own lists.

Advanced users can enable additional lists, block JavaScript locally or globally, and create custom rules to override filter-list entries. With flexible controls and a focus on performance, uBlock Origin helps make browsing cleaner, safer, and more private.

User Growth & Download Statistics

Add-on Advertising Privacy & Security Open Source

By:

Raymond Hill

Daily users:

11,335,814 6.22K

Rating:

4.80

(22,201) 23 new ratings

Version:

1.75.0 Last updated: 2026-10-11

Version code:

6490666

Creation date:

2015-04-25

Firefox add-on GUID:

uBlock0@raymondhill.net

Firefox add-on numeric ID:

607454

Weekly download count:

239,236

Firefox on Android:

Yes

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:

4.43MB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-10-13

Compare stats and ranking:

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 Pi***** 2026-10-13

by Fi***** 2026-10-12

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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