# uBlock Origin

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

Canonical page: [https://chrome-stats.com/d/ublock-origin](https://chrome-stats.com/d/ublock-origin)

## Overview

- **ID:** `ublock-origin`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Raymond Hill
- **Category:** privacy-security
- **Daily users:** 10,990,791
- **Weekly downloads:** 246,560
- **Rating:** 4.80 / 5 (22,082 ratings)
- **Version:** 1.74.0
- **Last updated:** 2026-09-06
- **First published:** 2015-04-25
- **Size:** 4.40 MB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/ublock-origin/)
- **Website:** [https://old.reddit.com/r/uBlockOrigin/](https://old.reddit.com/r/uBlockOrigin/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/ublock-origin/privacy/](https://addons.mozilla.org/firefox/addon/ublock-origin/privacy/)

## Description

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.

## Rankings

- #1 — Overall
- #1 — Privacy & Security
- #1 — block ads
- #1 — blog
- #1 — memory
- #1 — mock

## Permissions and access

### Permissions

- `alarms`
- `dns`
- `menus`
- `privacy`
- `storage`
- `tabs`
- `unlimitedStorage`
- `webNavigation`
- `webRequest`
- `webRequestBlocking`
- `<all_urls>`

### Content script matches

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

## Safety

- **Risk impact:** Very high risk impact
- **Risk likelihood:** Very low risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

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.

## Similar extensions and apps

- [uBlock Origin 2025](https://chrome-stats.com/d/player-downloader-ali-2025) — 75 users, 1.00 / 5
- [Natt ADBlocker](https://chrome-stats.com/d/natt-adblocker) — 9 users, 2.33 / 5
- [uBlock Origin](https://chrome-stats.com/d/ublock-original) — 30 users, 2.33 / 5
- [uBlock](https://chrome-stats.com/d/ublock-for-firefox) — 43 users, 3.00 / 5
- [ATO Blocker](https://chrome-stats.com/d/ato-blocker) — 1 users, 5.00 / 5
- [BlockeruBlock](https://chrome-stats.com/d/blockerublock) — 1 users
- [u-Blocker Lite: Fast & Private Ad Blocker](https://chrome-stats.com/d/u-blocker-lite) — 2 users
- [uBlock Origin Lite](https://chrome-stats.com/d/ublock-origin-lite) — 6,252 users, 4.76 / 5
- [uBlock Lite](https://chrome-stats.com/d/ublock-lite-edition) — 525 users, 4.00 / 5
- [adblock plus 2025](https://chrome-stats.com/d/player-ali-video) — 1 users
- [UltraBlock - Privacy & Adblock](https://chrome-stats.com/d/ultrablock-privacy-adblock) — 254 users, 4.17 / 5
- [iBlockAds](https://chrome-stats.com/d/iblockads) — 15 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/ublock-origin)