Quick take
Already sold on uBlock Origin?
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Short answer: uBlock Origin is the best free ad and tracker blocker — lightweight, open source and accepting no money from advertisers. In 2026 the big change is Chrome: Google completed its switch to Manifest V3, so the full uBlock Origin is no longer available in the Chrome Web Store. Chrome users can install uBlock Origin Lite, which blocks most ads but has fewer advanced features. For the full version, use Firefox (the developer's recommended browser).
What changed in Chrome
Google's Manifest V3 extension platform limits how extensions can filter web requests. uBlock Origin was built on the older Manifest V2 system, which Chrome has now phased out:
- The full extension has been removed from the Chrome Web Store.
- Chrome no longer runs Manifest V2 extensions, so existing installs stop working or updating.
- uBlock Origin Lite (uBOL), built by the same developer for Manifest V3, is the Chrome option.
uBlock Origin vs. uBlock Origin Lite
| uBlock Origin (Firefox) | uBlock Origin Lite (Chrome, Edge, others) |
|---|---|---|
Blocks most ads and trackers | Yes | Yes |
Custom filters and element picker | Full | Limited |
Dynamic filtering / advanced mode | Yes | No |
Logger for troubleshooting | Yes | No |
Updates filter lists independently | Yes | Updated with extension releases |
Resource use | Very low | Very low |
For most people, Lite blocks the ads they notice. Power users who rely on custom rules, the element picker or dynamic filtering should use Firefox.
uBlock Origin's logger shows every request a page makes and which filter blocked it — one of the features only the full version offers.
Where to get the full uBlock Origin
- Firefox (desktop and Android): fully supported and recommended by the developer.
- Other browsers: availability changes as they follow Chrome's lead on Manifest V3 — check the official uBlock Origin site for current support.
- Brave: has its own built-in blocker (Shields) that uses many of the same filter lists, so you may not need an extension at all.
How to set it up well
- Install from the official store link on ublockorigin.com — copycat extensions with similar names exist.
- Leave the default filter lists on; they're well chosen.
- Optionally enable an annoyances list to remove cookie banners and pop-ups.
- If a site breaks, click the uBlock icon and turn it off for that site.
Why ad blocking is a security tool
Malicious advertising ("malvertising") has delivered malware and scam pages through legitimate ad networks. Blocking ads and trackers reduces that risk and speeds up page loads. It's worth supporting sites you value in other ways, such as subscriptions.
Verdict
uBlock Origin remains the best content blocker available — in its full form on Firefox. On Chrome, uBlock Origin Lite still blocks most ads efficiently, but if advanced control matters to you, it's a good reason to switch browsers.
Frequently asked questions
Does uBlock Origin still work in Chrome?
The full version doesn't — Chrome removed it with the switch to Manifest V3. Use uBlock Origin Lite in Chrome, or the full version in Firefox.
Is uBlock Origin Lite as good?
It blocks most ads and trackers, but it lacks advanced features like dynamic filtering, the logger and full custom filters.
Is uBlock Origin safe?
Yes — it's open source, free and doesn't sell your data. Install it only from official store listings.
Sources
- uBlock Origin, Official site
- BetaNews, Firefox, Brave, uBlock Origin, Chrome and Edge
The bottom line
