While it’s true you can adjust many different preferences from Tools/Options in Firefox, the real power user settings are in the configuration editor.
Firefox allows you to modify every single setting by typing the address about:config in your address bar and loading it.
One such feature that’s very hidden is browser.ctrlTab.previews. After loading about:config, search for this setting and enable it by double-clicking, which will set it to true. This enables tab previews if you have multiple tabs open and use CTRL+TAB to switch between them. It looks like this:
After modifying this setting to true, open a few tabs, press CTRL, hold it and tap TAB a few times. You’ll see the previews appear.
Additional note: The bottom-most option when previewing tabs is "Show all X tabs". If you select this, you can use your mouse to pick which tab you want to go to, and even close tabs right from within that space!
This is a very, very useful feature to have enabled.
And it just might be the best tab-preview feature that exists.
Why isn’t this an option from Tools/Options as a checkbox?
I have no idea. I stumbled upon this by accident, but oh, what a find!
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