# cBlock Origin

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

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

## Overview

- **ID:** `cblock-origin`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** Ariel
- **Daily users:** 1,021
- **Weekly downloads:** 149
- **Rating:** 3.50 / 5 (24 ratings)
- **Version:** 1.71.0
- **Last updated:** 2026-05-29
- **First published:** 2025-07-23
- **Size:** 12 MB
- **Data as of:** 2026-08-04
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/cblock-origin/)
- **Website:** [https://codeberg.org/lanticy/cBlock/issues](https://codeberg.org/lanticy/cBlock/issues)

## Description

cBlock Origin 是基于开源广告拦截插件 uBlock Origin 的衍生版本，专为中国大陆用户提供可用的安装包。项目在遵守 GNU GPLv3 的前提下，对名称、扩展 ID、默认语言等进行了必要的微调和重新打包，核心过滤规则、界面逻辑与使用体验未做功能性改动，力求与原版保持同步更新。适用于希望在国内环境中稳定安装并使用高效拦截器的用户。

该扩展强调轻量、高效，尽可能降低 CPU 与内存占用，保留 uBlock Origin 的过滤能力与隐私保护功能。感谢原作者 Raymond Hill 的贡献；本项目仅在许可允许范围内做出兼容性调整，便于中国用户获取并使用可靠的广告与跟踪拦截工具。

## 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:** High 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 is not longer available in the store

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

## Similar extensions and apps

- [uBlock Origin](https://chrome-stats.com/d/ublock-origin) — 10,922,128 users, 4.80 / 5
- [BlockeruBlock](https://chrome-stats.com/d/blockerublock) — 1 users
- [uBlock Origin](https://chrome-stats.com/d/ublock-original) — 30 users, 2.33 / 5
- [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
- [Bing Redirect Blocker](https://chrome-stats.com/d/bing_redirect_blocker) — 17 users, 1.00 / 5
- [fairBlock Reborn](https://chrome-stats.com/d/fairblock-reborn) — 40 users, 3.00 / 5
- [ATO Blocker](https://chrome-stats.com/d/ato-blocker) — 1 users, 5.00 / 5
- [uBlock Origin with password](https://chrome-stats.com/d/ublock-origin-with-password) — 7 users, 1.00 / 5
- [FadBlock Origin](https://chrome-stats.com/d/fadblock-origin) — 6,027 users, 3.59 / 5
- [Unblock Youku](https://chrome-stats.com/d/unblock-youku-firefox) — 2,225 users, 4.54 / 5
- [Baidu AdBlocker - 百度药丸](https://chrome-stats.com/d/baidu-adblocker-%E7%99%BE%E5%BA%A6%E8%8D%AF%E4%B8%B8) — 339 users, 4.75 / 5

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