We have this working now in a
near-future version (
version 2.4.7) of BookMacster and Markster: The currently-viewed web page in Opera or Vivaldi is now indicated for
landing in the Floating Menu, Menu Extra (aka Status Item, menulet) or Dock Menu of BookMacster or Markster.
However, to make this work also requires a new version of our extension, either
BookMacster Sync version 38 or
BookMacster Button version 26. Nowadays, extensions must be submitted to the browser maker, in this case Opera Software, and by signed and/or distributed through their "store". We have just submitted these new revisions to Opera Software. Unfortunately, Opera Software does a
manual review of all extensions and
some developers are reporting that Opera review now takes weeks. If they don't do it in a week or so, we'll proceed with Chrome instead, so that at least we can have this working in Vivaldi. (Vivaldi uses the Chrome Web Store, and Chrome reviews are automated.)