Firefox tab less

Friday, December 9, 2022 · 1 minute · 117 words

We can customize Firefox interface to hide the tabs bar :

  1. First, we have to tell Firefox that we want to customize its interface.

    In the address bar, type about:config and accept the risk message.

    Then, look for a key named toolkit.legacyUserProfileCustomizations.stylesheets

    Change its value to true.

  2. Look for the profile folder

    To show all profiles used in Firefox :

    cat ~/.mozilla/firefox/profiles.ini

    The profil name has letters and numbers, generally you are looking for the one with the word default in it.

    Go inside this folder et create a chrome folder :

    mkdir chrome

    Inside this chrome folder, edit a new file named userChrome.css with this content :

    #TabsToolbar {
        display: none !important;
  3. Restart Firefox !

A Firefox window without the tabs bar