Firefox is now the last major browser that still supports uBlock Origin | PCWorld
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by Viktor Eriksson and Joel Lee
Firefox is now the last major browser that still supports uBlock Origin
News
Aug 13, 2026
Firefox recently announced via Bluesky post: “Our support for uBlock Origin isn’t going anywhere.” The moment comes in response to news that Microsoft Edge is soon going to lock out uBlock Origin and other ad-blocking extensions that run on Manifest V2 architecture.
Our support for uBlock Origin isn't going anywhere.<br>— Firefox (@firefox.com) 2026-08-10T20:21:48.446Z
Once Microsoft Edge moves to Manifest V3, ad-blocking extensions won’t have access to the functions needed to properly identify and block ads that occur while browsing websites and watching videos.
Microsoft’s move isn’t surprising, as Edge is based on Chromium, the open-source browser engine that powers most web browsers today, including Opera, Brave, Vivaldi, and Samsung Browser. Google initiated the migration from Manifest V2 to V3 in Chrome/Chromium, and Microsoft Edge is now following Google’s lead.
This is officially Firefox's killer app. I will never go back to Chrome so long as uBlock Origin is supported on Firefox.<br>— (@hispanicat7hedisco.bsky.social) 2026-08-11T13:30:56.181Z
But Firefox is one of the few web browsers remaining that isn’t based on Chromium, and it’s now the only major browser to still support uBlock Origin. Neither Safari nor DuckDuckGo—the two other major non-Chromium browsers out there—support uBlock Origin.
For die-hard uBlock Origin fans, Firefox appears to be the only browser left without compromises. With any other browser, you’ll need to settle for uBlock Origin Lite (with fewer features and less ad-blocking success) or whatever built-in ad-blocking feature comes with the browser.
This article originally appeared on our sister publication PC för Alla and was translated and localized from Swedish.
by<br>Viktor Eriksson
Contributor, PCWorld
Viktor writes news and reports for our sister sites, M3 and PC för Alla. He is passionate about technology and is on the ball with the latest product releases and the hottest talking points in the consumer tech industry.
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