<![CDATA[Can't upload Manifest v3 extension]]>I want to update my add-on to Manifest v3, I tested it in Opera and it works, but I can't upload it to the Add-Ons Store. I get "Manifest format version is not supported.". Are there any news on this when this will be supported? Chrome and Edge stores already support it.

]]>https://forums.opera.com/topic/53545/can-t-upload-manifest-v3-extensionRSS for NodeFri, 15 May 2026 12:10:47 GMTThu, 06 Jan 2022 11:11:26 GMT60<![CDATA[Reply to Can't upload Manifest v3 extension on Tue, 15 Feb 2022 07:38:48 GMT]]>@brawl98-0

Yes, I am aware. Just use version 2 for now, till the issue is fixed.
The worst thing is that add-ons seem to stay under review indefinitely, while for Chrome and Edge it only takes 1-2 days in my case for my add-on to get published.

]]>https://forums.opera.com/post/274476https://forums.opera.com/post/274476Tue, 15 Feb 2022 07:38:48 GMT<![CDATA[Reply to Can't upload Manifest v3 extension on Tue, 15 Feb 2022 06:58:15 GMT]]>@costasathan Not possible for me. Opera supports MV3, but their Store does not because they don't care

]]>https://forums.opera.com/post/274473https://forums.opera.com/post/274473Tue, 15 Feb 2022 06:58:15 GMT<![CDATA[Reply to Can't upload Manifest v3 extension on Mon, 14 Feb 2022 22:01:02 GMT]]>Just stick with version 2 for now.

]]>https://forums.opera.com/post/274444https://forums.opera.com/post/274444Mon, 14 Feb 2022 22:01:02 GMT<![CDATA[Reply to Can't upload Manifest v3 extension on Sun, 13 Feb 2022 18:00:23 GMT]]>I have a different issue.

My extension works on Google and Edge, but refuse to work with Opera.

The error I get says that "content_security_policy" value must be string when in fact in Google's manifest v3 its an object.

]]>https://forums.opera.com/post/274382https://forums.opera.com/post/274382Sun, 13 Feb 2022 18:00:23 GMT