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Pinned tab width setting?

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  • Last reply by cor-el

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I have looked at a few other articles and questions and browsed the options and even the about:config settings and didn't see anything specific to this.

I like to have pinned tabs for the front and back end of my website and a couple of others pages. However, because all the tabs show is the same favicon there is no other way to distinguish them and I am constantly clicking through them to find the pinned page I want.

Can someone please tell me if there is a setting or option to change this behavior or width of the pinned tabs?

Thanks in advance. Paul

I have looked at a few other articles and questions and browsed the options and even the about:config settings and didn't see anything specific to this. I like to have pinned tabs for the front and back end of my website and a couple of others pages. However, because all the tabs show is the same favicon there is no other way to distinguish them and I am constantly clicking through them to find the pinned page I want. Can someone please tell me if there is a setting or option to change this behavior or width of the pinned tabs? Thanks in advance. Paul

All Replies (1)

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Pinned tbs only show the favicon and hide the label text, so increasing the width won't give extra information. If the label text as shown in the tooltip is different then you might be able to use code in userChrome.css to give the pinned tab a background-image.


Add code to the userChrome.css file below the default @namespace line.


@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */

.tabbrowser-tab[label^="<label-text>"] { background-image: linear-gradient(red,red) !important; }

It is not that difficult to create userChrome.css if you have never used it.

The first step is to open the "Help -> Troubleshooting Information" page and find the button to access the profile folder.

You can find this button under the "Application Basics" section as "Profile Folder -> Open Folder". If you click this button then you open the profile folder in the Windows File Explorer. You need to create a folder with the name chrome in this folder (name is all lowercase). In the chrome folder you need to create a plain text file with the name userChrome.css (name is case sensitive). In this userChrome.css text file you paste the text posted.

In Windows saving the file is usually the only time things get more complicated because Windows can silently add a .txt file extension and you end up with a file named userChrome.css.txt. To avoid this you need to make sure to select "All files" in the dialog to save the file in the text editor using "Save File as".

You need to close (Quit/Exit) and restart Firefox when you create or modify the userChrome.css file.

See also:

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.

  • toolkit.legacyUserProfileCustomizations.stylesheets = true

See: