uBlock Origin
uBlock Origin is a wide-spectrum content blocker for Chromium and Firefox that is CPU and memory efficient. Blocks ads, trackers, miners, and malware out of the box.
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The most efficient ad-blocker, low resource usage, no donations, privacy-first.
Core Features
- Default filter lists for ads, trackers, miners, and malware
- Advanced dynamic firewall for per-site control
- Custom filter syntax support
- Lightweight and faster than most alternatives
What It Can't Do
- •Do not run uBO alongside other content blockers (Adblock Plus, AdGuard) to avoid conflicts.
- •Google Chrome will drop support after version 139 due to Manifest V3; consider Firefox or Microsoft Edge.
- •If a site breaks, click the toolbar icon and disable uBO on that site or add an exception rule.
- •Only install from official stores; third-party builds may contain malware.
Use Cases
- Block intrusive ads and pop-ups while browsing
- Prevent web tracking and protect online privacy
- Block malicious domains and cryptocurrency miners
Detailed Introduction
uBlock Origin (uBO) is a lightweight, open-source browser extension that blocks ads, trackers, coin miners, pop-ups, anti-adblock messages, and malicious websites. It uses multiple filter lists (EasyList, EasyPrivacy, Peter Lowe's, etc.) by default, and supports custom rules. Unlike many ad-blockers, uBO does not accept 'acceptable ads' and gives users full control via an advanced firewall interface. It performs better than most popular blockers in terms of resource usage, and works on Firefox, Chrome, Edge, Opera, and Thunderbird. The developer explicitly avoids donations and keeps the project free for users.
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Getting Started
Download installer
Click the button above to download the installer for your system
Install the software
Double-click the downloaded installer and follow the prompts
Step 1: Go to your browser's extension store (Chrome Web Store / Firefox Add-ons / Edge Add-ons)
Step 2: Search for 'uBlock Origin' and install the official add-on
Step 3: After installation, click the toolbar icon to view stats; default settings work optimally
- Step 1: Go to your browser's extension store (Chrome Web Store / Firefox Add-ons / Edge Add-ons)
- Step 2: Search for 'uBlock Origin' and install the official add-on
- Step 3: After installation, click the toolbar icon to view stats; default settings work optimally
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Open Source Transparency
View GitHub SourceUninstall Info
Go to your browser’s extension management page, find uBlock Origin, and click Remove / Delete. Clear browser cache if you encounter leftover issues.
No Extra Dependencies
Ready to use after download. No additional runtime required.
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