Google to push ahead with Chrome's ad-blocker extension overhaul in earnest

Google is phasing out Manifest V2 Chrome extensions in favor of Manifest V3, starting with warnings in Beta/Dev/Canary and progressing to disablement, with Stable following by early 2025; enterprises can defer via policy until June 2025. MV3 is positioned as more performant, private, and secure, though critics say it limits content blockers, prompting Google to add features like user scripts, offscreen documents, and expanded declarativeNetRequest rules (up to 330,000 static and 30,000 dynamic). Most actively maintained extensions now support MV3, and users will be guided to MV3 alternatives, including lighter versions of popular ad blockers.