Firefox: cacher la barre d'onglet / hide tab bar

Copie locale de, thks


  • Go to about:support in your address bar
  • Look for your profiles directory and open it:
  • Create a file named chrome/userChrome.css in your profile directory:
  mkdir chrome && touch chrome/userChrome.css

Populate the following css code:

#main-window[tabsintitlebar="true"]:not([extradragspace="true"]) #TabsToolbar > .toolbar-items {
  opacity: 0;
  pointer-events: none;
#main-window:not([tabsintitlebar="true"]) #TabsToolbar {
    visibility: collapse !important;
#sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] #sidebar-header {
  display: none;
.tab {
  margin-left: 1px;
  margin-right: 1px;

Then go to about:config in your address bar and set this to true:

  • info/firefox_hide_tab_bar.txt
  • Dernière modification : 2023/11/04 05:33
  • de radeff