I gave it a try. Works pretty good. Being a Flatpak app, it will require desktop portals to fully work. That said, it worked absolutely fine out of the box for

I gave it a try. Works pretty good. Being a Flatpak app, it will require desktop portals to fully work. That said, it worked absolutely fine out of the box for me with my existing xdg-desktop-portal-wlr setup. So, it should work fine in any X11 or Wayland setup where you have an xdg-desktop-portal setup that supports the Screenshot API. The results are mixed, but not bad by any means. Cleanly readable text comes out mostly fine with maybe only whitespace issues and the occasional error, which makes this still potentially very useful for copying text out of error dialogs and whatnot. (Though, I've found that on Linux, error dialogs are far more likely to have selectable text in the first place. And on Windows, standard MessageBox responds to Ctrl+C.)