While Manifest v3 does not mean the end for content blocking on Chrome, Edge and other Chromium-based browsers, it may limit abilities under certain circumstances. Used by content blockers extensively to filter certain items, it has been replaced by a less powerful option in Manifest v3. Probably the most important of them all is the WebRequest API. Mozilla announced early on that it will support Manifest v3 as well, but that it would continue to support important APIs that Google limited in Manifest v3. Those offered on the Chrome Web Store will vanish, unless their developers published an update to make them compatible with the new Manifest v3. Those installed will be disabled automatically, because they are no longer compatible. There is an Enterprise policy to extend the blocking of Manifest v2 support in Chrome by six months, but Google announced already that it won't extend that, despite delays in getting all APIs out in the open for developers.īy June 2023, Chrome and most Chromium-based browsers won't support Manifest v2 extensions anymore.
From January 2023 on, extensions need to support Manifest v3 exclusively to be listed in the Chrome Web Store. Google is using its might to push Manifest v3, and most Chromium-based browsers, including Microsoft Edge, will follow. Current Chromium extensions use Manifest V2 for the most part, even though the January 2023 deadline is looming over the heads of every extension developer.
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