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Strollin' around
Status: Exploring more

From the previous post on Crowdicity:

I would like to see vertical tabs baked in. MS Edge now has it out of the box!

I currently use addons for this - but there's no way to disable the top tab bar, which duplicates the tabs and takes up space.

Vertical tabs (with top bar disabled) would free up more space for web content, which is (usually) vertical. Most screens are widescreen (RIP ThinkPad 4:3 ratios), so the less browser UI at the top/bottom, the more content we can view.


The original post received 154 votes and as such was the 3rd highest voted post in the "General" category.

New member

For everyone who are waiting for the official release, I already found a way to add this feature:


For how to part, just check the post in GitHub: Firefox's Vertical Tabs

This post is written in Chinese, you can use translator or just copy/paste the code (if you know what you are doing), however, I will post this tutorial in English if anyone required.

Have fun 🙂

Strollin' around

Any luck with this feature request?

This is so useful that if it weren't for Microsoft's tendency to add intrusive features and tracking, I'd fully switch to Edge for my personal use.

New member

Someone gave me this solution to get rid of the unwanted horizontal tab bar;  I'm not smart enough to have invented it myself. I tried using just the first 3 lines, but that didn't work right.  It works for FF82/linux, but not for Nightly/linux.  Add the following to your userChrome.css file:

.tabbrowser-tab {
visibility: collapse;
.titlebar-button {
height: 27px !important;
#nav-bar {
margin-top: -42px;
margin-right: 140px;
box-shadow: none !important;

[uidensity="compact"]:root .titlebar-button {
height: 32px !important;
[uidensity="compact"]:root #nav-bar {
margin-top: -32px;

#titlebar-spacer {
background-color: var(--chrome-secondary-background-color);
#titlebar-buttonbox-container {
background-color: var(--chrome-secondary-background-color);
.titlebar-color {
background-color: var(--toolbar-bgcolor);

#main-window[inFullscreen="true"] #sidebar-box,
#main-window[inFullscreen="true"] #sidebar-box + splitter {
visibility: collapse;

#sidebar-box #sidebar-header {
display: none !important;


New member

I recently started using vivaldi as my cromium alternative and the vertical tabs are great. It makes it harder to get back to firefox.

New member

This is so stupid, so many browsers have this option in 2023, ADD IT BACK ALREADY.

New member

Dear Mozilla, please do it!

Strollin' around

I agree with this and the particular way that Edge implements it is perfect.

New member

I would love native vertical tabs. I use Edge more often now because it has vertical tabs natively. The userchrome.css "fix" for removing the horizontal tabs (with Tree Style tabs) is finicky - works on some PC, not others, sometimes needs changing. Aaargh.

New member

Defo would like this to be supported natively

Making moves

Please, please, please can this be prioritized? This should be a no-brainer! Just give us the option to choose horizontal or vertical tabs already without having to have an extension. Not only is his sensible, it will eliminate the need for additional resource-hogging and data-gathering extensions just to get vertical tabs.