Title says it all. I'm trying to hide the address and tab bar in firefox such that it only shows up when I press Ctrl+L. Similar to the way it auto hides in full screen mode. I found a whole bunch of discontinued extensions, but no luck with something that still works. Any ideas?


3 Answers 3


I found a solution. Go to about:config. Set full-screen-api.ignore-widgets to true. Then you can press f11 to hide all ui elements. You will loose the full screen mode though.

  • 1
    Oh my godnesses, where did you find that information? Cannot beleave how much time I spent on finding any good infos and ended up writing a userChrome.css and now it turns out, a single config-setting makes about all of the deal for me; Thank you loads of much!
    – Ida
    Nov 11, 2021 at 17:14
  • The only caveat for me is, that focusing the address-bar, or opening a new tab, will show the top-bar permanently, so you have to hit F11 again. As you don't want to loose fullscreen-mode, maybe running firefox in kiosk-mode. can bring you the wished result? You can run it of the commandline with firefox --kiosk
    – Ida
    Nov 11, 2021 at 17:27
  • This needs to be more visible! I was looking for exactly that functionality for ages.
    – DeVadder
    Sep 1, 2022 at 9:26
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    @Ida I installed auto fullscreen addon with this config. Now everything works perfectly as expected for me. addons.mozilla.org/en-US/firefox/addon/i-auto-fullscreen Sep 2, 2022 at 20:20

Another solution without loosing the full screen mode, is the way it is handled in the Mint WebApp.

  • Create a chrome folder in your firefox profile folder
  • Place a userChrome.css file within this folder
  • And add the following content to the file
#nav-bar, #identity-box, #tabbrowser-tabs, #TabsToolbar {
    visibility: collapse !important;
  • You can also only hide the navigation bar or the tabs bar by removing some of the keywords
  • This way you can make your browser look like an app

I tried a number of solutions. Nothing worked for my liking. I found this css config does exactly what I want.

This one needs to be added in userChrome.css


It autohides address bar, navigation bar and bookmarks bar unit. It shows them when ctrl + l is pressed.

I also hide tabs along this and use only tree style tabs.

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