Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

En savoir plus

How to hide the tab bar?

  • 2 réponses
  • 0 a ce problème
  • 27 vues
  • Dernière réponse par psusi
  • Archivé

I've been searching for a way to hide the tab bar and reclaim that space. Some sources on the web set to change some settings in about:config and edit userChrome.css, but this did not work. This question links to an add-on to do it, but the link is broken:

https://support.mozilla.org/en-US/questions/1331617

I've been searching for a way to hide the tab bar and reclaim that space. Some sources on the web set to change some settings in about:config and edit userChrome.css, but this did not work. This question links to an add-on to do it, but the link is broken: https://support.mozilla.org/en-US/questions/1331617

Toutes les réponses (2)

Add CSS code to the userChrome.css file in the chrome folder in the Firefox profile folder. You may have to hide the "List all tabs" button.


/* TAB BAR - HIDE ONE Tab [110+] - DO NOT use tabs below #nav-bar */
#tabbrowser-tabs .tabbrowser-tab:only-of-type,
#tabbrowser-tabs .tabbrowser-tab:only-of-type + #tabbrowser-arrowscrollbox-periphery{
  visibility: collapse !important;
}
#tabbrowser-tabs, #tabbrowser-arrowscrollbox {min-height:0!important;}
#TabsToolbar:not(:hover) #alltabs-button {display:none !important;}

More info about userChrome.css/userContent.css in case you are not familiar: *https://www.userchrome.org/what-is-userchrome-css.html

In Firefox 69 and later you need to set this pref to true on the about:config page to enable userChrome.css and userContent.css in the chrome folder.

So that is almost the same advice I had already found and tried. Your CSS is slightly different and the other sources suggested setting several other settings in about:config, besides that one. It still doesn't work though. I'm on firefox 113. How can I verify that firefox is even using the css file?