Any way to delete cookies on close?
There seems to be no option to delete cookies (and/or any other personal information) when closing the browser/tab/etc. There is a lot that could be done with cookie management: - option of deleting all cookies older than X when closing Vivaldi. - white listing some site that don't get deleted on close - black listing sites that cannot save cookies - delete all cookies of sites that are not currently open in tabs (when closing): i.e. automatically white list sites in open tabs. ...
For now there is session-only setting in settings/privacy, and site settings if you click on the icon at the far left of the toolbar.
That's what session-only does under settings > privacy.