Accessing webpage from UI
Is there any way to access the webpage from the UI? How does Page Actions do it?
The webpage is inside a <object>tag, so I think it can't be done.
Maybe you can use the Chrome Extension API to do that…
If you only want to add a new Page Actions, create a new one in resources/vivaldi/user_files</object>
Like Xirzag already indicated: That depends on what you intent to do. Wanna share some more details?