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Re:Firefox’s speed with large numbers of tabs leaves Chrome ... by DennisP on Tuesday July 25, 2017 @03:12PM (#14850937)
Here's the help I need: make a button I can push to save the urls of all open tabs to a separate history, and close the tabs. There's too much noise in the regular history. Bonus points if the saved urls are grouped by the window they were in.

I tried making a chrome plugin for this, but with a lot of tabs it didn't work reliably, and I didn't have time to put more work into it.

Re:Firefox’s speed with large numbers of tabs leaves Chrome ... by pkkm on Tuesday July 25, 2017 @03:26PM (#14851061)
You can create a "to read later" folder in your bookmarks, then right click the tab bar in each window and select "Bookmark All Tabs". That's fairly close to what you're describing, and also works with Firefox Sync (though in my experience it's best to keep the number of bookmarks below 5000 for Sync to work well).