@doctorg said in Support for Opera add-ons:
@thescorb0 Opera has a different and incompatible user and extension interface. I guess some extensions would not run on Vivaldi.
But some work without a problem, so I don't think that the interface is incompatible. Opera can support both extension types. Even Waterfox gained ability to support them. If there would be any problems with them then require functions can be just added to make them work.
I think it would be easier to ask extension author to add support for Vivaldi.
But where an add-on with support for Vivaldi (but not Chrome itself?) would be uploaded? Is there a Vivaldi extensions page? If any the author should be asked to make a Chrome extension and put in the Chrome web store. But I think that if they wanted to do that then they already would. Chrome is a more popular browser than Opera after all.