Dropping Manifest V2 Extensions

Sayan Sen (Hacker News):

For a while now the transition away from Manifest V2 (MV2) to MV3 has been on-going and it looks like it is entering its final phase of deprecation, at least, in the case of Google Chrome. A recent discussion thread in the w3c WebExtensions Community Group GitHub repo has highlighted how the latest and upcoming versions of the most popular browser are expected to be its final releases with support for MV2 extensions.

[…]

Here is a rundown of the changes coming in the final such releases of Chromium releases:

• Chromium 150 lost ExtensionManifestV2Disabled option
• Chromium 151 will loose ExtensionManifestV2Unsupported option
• Chromium 151 will loose ExtensionManifestV2Availability option
• Chromium 151 will likely loose AllowLegacyMV2Extensions option

Other Chromium-based browsers like Opera and Microsoft Edge could soon follow suit too. Although it is not specified, Edge began disabling uBlock Origin back in February, and Opera could also stop the functioning of MV2 add-ons, even though it had committed to support MV2 for longer in October 2024.

Google:

Aug 31st 2026: All remaining Manifest V2 extensions removed from the Chrome Web Store

Previously:

• Chrome Warning About Manifest V2 Extensions
• Chrome’s Manifest V3 and uBlock Origin

Chromium Google Chrome Mac Mac App macOS Tahoe 26 Microsoft Edge Opera Sunset uBlock Origin

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