FIREFOX LAST MAJOR BROWSER SUPPORTING UBLOCCK ORIGIN

uBlock Origin has faced compatibility challenges across the browser landscape. Chrome, Edge, and other Chromium-based browsers have shifted to Manifest V3, a new extension framework that limits the capabilities of content blockers like uBlock Origin. Firefox continues supporting the extension through its established system, making it the default choice for users who prioritize ad-blocking functionality. The extension remains one of the most widely used privacy tools, with millions of active users. The transition reflects broader industry changes in how browsers handle extensions and user privacy. While Chromium browsers argue the new framework improves security and performance, critics contend it weakens user control over web content. uBlock Origin's creator has stated the extension cannot function effectively under Manifest V3's constraints. For users dependent on uBlock Origin, Firefox represents the primary maintained browser option among major alternatives.