Not a solution, but I can copy multiple tabs addresses with a tree style tabs addon, Sideberry.
That would be a job for a tab extension, wouldn't be? Like Tree Style Tab.
I use a nice little Firefox extension (might also be available for Chrome) called TabList - it's about 20 lines of code and works great.
I would swear this was in the right-click menu when multiple tabs were selected? But maybe it was some extension.
Re:Firefox Address Bar Tips
by watashiato on Monday July 10, 2023 @05:06PM
(#36672948)
The no-addon workaround for this is to right click any tab, first select all tabs and then bookmark all tabs. Give the folder a name and open it in the bookmark manager. Now you can select them all and copy the URLs.
It's an awkward solution, but it does work and is relatively quick.
As soon as you were able to select multiple tabs for making bookmarks I just assumed that you could ctrl+c and get the urls in plaintext. But doesn't seem to be that easy.