
Extension Pulse, week of August 17: Edge starts killing MV2, Firefox goes fortnightly
Edge starts phasing out MV2. Firefox 155 goes fortnightly. Chrome 153 binds protocol handlers to the extension lifetime.
Maxim Kosterin
4 min read
4 articles found

Edge starts phasing out MV2. Firefox 155 goes fortnightly. Chrome 153 binds protocol handlers to the extension lifetime.

Chrome 151 deletes every remaining MV2 flag. Messaging gets structured clone. setBadgeText is capped at 100 bytes.

Chrome Web Store yanks remaining MV2 listings on August 31. AI-agent permissions landed at W3C. The MV2 preference storage is already deleted in Chromium.

Everyone said Chrome's Manifest V2 deadline would kill ad blockers. Here's what the sunset actually stranded — and why Firefox is now the MV2 refuge.