30

I've started using Tree Style Tab on Firefox. It's a great solution for cases where you have many, many tabs and you want to add some level of organization to it.

It's becoming increasingly unnecessary to have the list of tabs on the top of my browser.

Is it possible to hide the list of tabs at the top of the browser?

1
  • I highly recommend this to anyone. It's such a better, simpler browsing experience.
    – Cauder
    Apr 12 '19 at 2:47
25

To hide the native tabs, you'll have to add a new file called userChrome.css and the css property visibility: collapse.

To do this, in Firefox click on Click on Menu -> Help -> Troubleshooting Information or navigate to about:support in the address bar.

Under the Application Basics section, there will be a section called Profile Directory with a button to Open Directory.

In the Profile Directory create a new folder called chrome. In the chrome folder create or edit the file userChrome.css if it already exists.

The contents of userChrome.css should be the following.

/* hides the native tabs */
#TabsToolbar {
  visibility: collapse;
}

Some optional further modifications to put in userChrome.css are:

/* hides the title bar */
#titlebar {
  visibility: collapse;
}

/* hides the sidebar */
#sidebar-header {
  visibility: collapse !important;
} 

A configuration that Xilin Sun uses is:

/* hides the native tabs */
#TabsToolbar {
  visibility: collapse;
}
/* leaves space for the window buttons */
#nav-bar {
    margin-top: -8px;
    margin-right: 74px;
    margin-bottom: -4px;
}

Try these out and see what you think looks best.

To answer your question in the comment, you may like this option better. I tried using visibility, but it was extremely flashy and jittery with the hover.

/* Option 1 */
#TabsToolbar {
    opacity: 0.0;
}

#TabsToolbar:hover {
    opacity: 1.0;
}

/* Option 2 */
#TabsToolbar {
    visibility: collapse;
}

#navigator-toolbox:hover #TabsToolbar {
    visibility: visible;
}
15
  • 1
    Thanks! This looks great. Just curious, why is there a folder called Chrome in Firefox?
    – Cauder
    Apr 12 '19 at 1:12
  • 1
    Interesting, looks like there's no relationship with Google Chrome. nngroup.com/articles/browser-and-gui-chrome
    – Cauder
    Apr 12 '19 at 1:27
  • 25
    As of Firefox 69 (late 2019), you also must go to about:config, and change the value of toolkit.legacyUserProfileCustomizations.stylesheets to true. I learned this in the comments of the post by Xilin Sun. Then quit and restart Firefox.
    – MikeF
    Dec 6 '19 at 15:51
  • 1
    About "Chrome": I'm guessing that Firefox developers considered user CSS modifications to be like chrome bumpers on 1950s cars: pretty but not affecting function. Dec 8 '19 at 15:48
  • 1
    @Cauder Because historically the Browser UI that is outside of the viewport is called "chrome". The term goes back to the netscape age. Analogy is to how the chrome on classic cars is the accents around the edges of the vehicle. Mar 11 at 20:56
7

If you're running Windows 10, I've found the following gives the best integration:

screenshot of windows 10 tab integration

  1. Enable "Title Bar" mode by going to the hamburger menu (☰) → Customize → Check the "Title Bar" checkbox at the bottom of the screen.
  2. Apply the following userChrome.css:
#main-window[tabsintitlebar="true"]:not([extradragspace="true"]) #TabsToolbar {
    opacity: 0;
    pointer-events: none;
}

#main-window:not([tabsintitlebar="true"]) #TabsToolbar {
    visibility: collapse !important;
}
1
  • 1
    +1 for mentioning how to enable "Title Bar" mode.
    – talljosh
    Nov 3 '20 at 23:16
6

Re-enable Custom CSS

  1. Visit about:config
  2. Search toolkit.legacyUserProfileCustomizations.stylesheets
  3. Toggle it, making the value true

Create userChrome.css

  1. Visit about:support
  2. To the right of "Profile Directory", press the button Open Directory
  3. Create a new folder named chrome
  4. Open the chrome folder and create a new file named userChrome.css

Set the styling in userChrome.css

Different CSS needs to be used depending on whether you have the titlebar enabled.

With Titlebar

Titlebar visible (Hamburger menu at top-right -> Customize) enter image description here

Result (Ubuntu screenshot) enter image description here

  1. Inside the userChrome.css file, insert the code below to hide tabs:
#TabsToolbar {
  visibility: collapse;
}
  1. Close and reopen Firefox to see the changes.

Without Titlebar

Titlebar not visible (Hamburger menu at top-right -> Customize) enter image description here

Result (Ubuntu screenshot) enter image description here

  1. Inside the userChrome.css file, insert the code below to hide tabs:
#tabbrowser-tabs {
    visibility: collapse;
}
  1. Close and reopen Firefox to see the changes.

Alternative Styling

Without Titlebar: Mini bar

Result (Ubuntu) enter image description here

Styling

#tabbrowser-tabs {
    visibility: collapse;
}
#titlebar {
    max-height: 16px;
}
#TabsToolbar .titlebar-buttonbox-container {
    transform: scale(.55) translateY(-10px) translateX(38px);
}

Without Titlebar: Drag Space Only (No Window Buttons)

Result (Ubuntu) enter image description here

Styling

#tabbrowser-tabs {
    visibility: collapse;
}
#titlebar {
    max-height: 5px;
}
#TabsToolbar .titlebar-buttonbox-container {
    display: none;
}

Without Titlebar: Inline Window Buttons (With Drag Box)

Result (Ubuntu) enter image description here enter image description here

Styling

#tabbrowser-tabs {
    visibility: collapse;
}
#navigator-toolbox {
    display: flex;
    flex-flow: row wrap;
}
#titlebar {
    order: 1;
    max-width: 146px;
}
#titlebar #TabsToolbar {
    background-color: var(--toolbar-bgcolor);
    background-image: var(--toolbar-bgimage)
}
#titlebar #TabsToolbar .titlebar-spacer {
    background-color: rgba(0,0,0,0.05);
    margin: 3px;
    border-radius: 25%;
    cursor: grab;
}
#titlebar #TabsToolbar .titlebar-spacer[type="pre-tabs"] {
    display: none;
}
#nav-bar {
    order: 0;
    width: calc(100% - 146px);
}
#PersonalToolbar {
    order: 2;
}
1
  • 1
    +1. Worked in FF 85.
    – Firelord
    Feb 22 at 4:42
2

This css removes tabs, but preserves menu and minimize/maximize/close buttons.

#tabbrowser-tabs {  visibility: collapse;}

Works in FF version 83

1
  • Thanks this is what I am looking for.
    – huggie
    May 29 at 7:00
0

You can just press F11 to go full screen. It takes away the native tabs bar among others.

1
  • 2
    Yes, “among others” — such as the (Windows) menu bar, the address bar, the Firefox tools and the bookmarks bar.  A little like burning down your house to get rid of termites.
    – Scott
    Nov 16 '20 at 1:21

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