uBlock Origin
uBlock Origin is an efficient and lightweight browser extension for content filtering, blocking advertisements, trackers, and malware domains across websites. Created and maintained by Raymond Hill (gorhill), it uses multiple filter lists to block content before it even loads, resulting in faster page rendering, reduced bandwidth usage, and significantly improved privacy compared to other ad blockers. Unlike its commercial counterparts, uBlock Origin is fully open source, has no “acceptable ads” programme that lets advertisers pay to bypass filters, and uses a fraction of the memory and CPU of similar extensions.
Key Features
- Efficient content blocking — Blocks ads, trackers, analytics, and malware domains before they load, using 60-80% less memory than competitors like AdBlock Plus
- Multiple filter list support — Works with EasyList, EasyPrivacy, uBlock filters, Peter Lowe’s list, Fanboy lists, and dozens of regional and specialised lists
- Element picker mode — Click on any page element to permanently hide it, with point-and-click element selection for custom cosmetic filtering
- Dynamic filtering — Per-site control over what types of content (scripts, frames, images, styles) are allowed, with a global and per-site matrix
- Anti-circumvention — Blocks anti-adblock scripts that try to detect and bypass content blockers, supporting thousands of sites that fight back
- Advanced user dashboard — Detailed logging of all blocked requests, firewall-style rules, and per-site permissions with granular control
- No acceptable ads — Unlike commercial blockers, uBlock Origin has no sponsored whitelist — every blocked domain stays blocked unless you explicitly allow it
- Three modes of operation — Easy mode (default lists), Medium mode (block all 3rd-party scripts/frames by default), and Hard mode (block all 3rd-party content by default), scaling up as you gain confidence
Why Use uBlock Origin?
uBlock Origin is the consensus choice among privacy and security communities for a reason: it does everything its competitors do, better, while using fewer system resources. It blocks not just ads but trackers, crypto miners, and malware domains across millions of sites. Because it has no “acceptable ads” programme, every blocked domain is genuinely blocked — your filters are not for sale. It is the single most impactful privacy tool you can install in 30 seconds, and it works silently in the background without ever asking for donations or showing promotional content.
Use Cases
- Everyday privacy — Stop Google, Facebook, and other trackers from following you across the web with EasyPrivacy + uBlock filters enabled
- Clean reading experience — Remove distracting ads, pop-ups, newsletter prompts, and video overlays from news sites and blogs for focused reading
- Security protection — Block known malware distribution domains, cryptojacking scripts, and phishing landing pages before they can load in your browser
Platform
Firefox · Chromium/Chrome · Edge · Opera · Brave
Licence
GPL 3.0