Firefox move tabs under address bar | Tutorial

Firefox move tabs under address bar

Firefox move tabs under address bar

Those who have been using Firefox for a long time still know the good old days. The times when the tabs were below the address bar are officially over. Nevertheless, we would like to present you a solution that allows you to move the Firefox tabs under the address bar. All you have to do is insert a few lines of code and make a setting. Don’t worry, you don’t have to program anything. We provide you with the entire code to copy.

Show Firefox tabs under the address bar – just a matter of taste?

For many products, whether on the Internet or in the real world, the choice is becoming more generic. When it comes to browser design, Chrome and Firefox almost don’t differ anymore. Therefore, it’s nice to be able to move Firefox tabs under the address bar if you prefer that arrangement. Since it’s officially not possible anymore, we’ll help you out!

Step-by-step instructions:

  • Open Firefox
  • Click on the three bars in the upper right corner
  • Select “Help” -> “More troubleshooting information”
  • In the general information you will find your profile folder. Click on the button “Open folder”
  • Create another folder in the folder. Give it the name “chrome”. Then open this folder
  • Now click on “View” in the explorer and check “File name extensions” in the “Show/Hide” section
  • Now create a text document in the “chrome” folder
  • Before you open it change the name to “userChrome.css”. The file change will ask if you really want to do this. Confirm with “Yes”
  • Open the userChrome.css – file
  • Copy the following code into it:
#TabsToolbar {
  position: absolute;
  display: block;
  bottom: 0;
  width: 100vw;
  background-clip: padding-box;
  color: var(--toolbar-color);

#tabbrowser-tabs {
  width: 100vw;

#navigator-toolbox {
  position: relative;
  padding-bottom: calc( var(--tab-min-height) + 8px );

#main-window[tabsintitlebar][sizemode="maximized"]:not([inDOMFullscreen="true"]) #titlebar {
  height: 36px;

.titlebar-buttonbox-container {
  position: fixed;
  right: 0;
  visibility: visible;
  display: block;

#TabsToolbar .titlebar-buttonbox-container,
#TabsToolbar #window-controls {
  display: none;

  • Save the file
  • Now go back to Firefox and search for “about:config” in the address bar
  • Confirm the warning
  • Enter the setting name toolkit.legacyUserProfilCustomizations.stylesheets The value must be “true”
    Double click on the setting to toggle between true and false
  • Now close all Firefox windows and restart the browser
  • Done!

We hope that despite the coding and the settings in Firefox no questions remain open with you. If that should be the case, just write us a comment on Youtube and we’ll see what else we can do for you. And now we wish you a lot of fun with your “improved” Firefox browser!

Video tutorial:

coming soon

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