You can already use vertical tabs, by the way.
You can already use vertical tabs, by the way.
After a recent Firefox update, a sidebar shows up and allows vertical browser tabs. How this looks and how to revert to horizontal tabs.
I know this is old news by now, but I was not sure how to activate vertical tabs on all of my browsers. It certainly is not obvious, so I wanted to include the instructions here in case anyone else wants to try it out.
Type about:config into the address bar of Firefox. You'll be greeted with a warning that you are accessing advanced settings - click "Accept the Risk and Continue." Search for the boolean preference sidebar.verticalTabs and set to true. That's it! Enjoy your vertical Tabs!
Edit: You may also need to set sidebar.revamp to true if it is not already/automatically set.
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Oh neat!!