How can I change the font size of a Thunderbird thread list on a Mac?

How do I change the font size of a Thunderbird thread list on a Mac?

I don't see any settings in the preferences.

Yoga

Posted 2010-08-12T13:54:57.970

Reputation: 369

Set it up 11 intead and it will display better – None – 2011-01-26T18:31:32.873

Answers

Daniel's answer is correct. You have to extend userChrome.css. Here is the CSS code that will fix the spacing as well:

/* Set default namespace to XUL */
@namespace
url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

/* Set font size in folder pane */
#folderTree >treechildren::-moz-tree-cell-text {
    font-size: 12pt !important;
}

/* Set font size in thread pane */
#threadTree >treechildren::-moz-tree-cell-text {
    font-size: 12pt !important;
}

/* Set height for cells in folder pane */
#folderTree >treechildren::-moz-tree-row {
   height: 25px !important;
}

/* Set height for cells in thread pane */
#threadTree >treechildren::-moz-tree-row {
   height: 25px !important;
}

qingu

Posted 2010-08-12T13:54:57.970

Reputation: 141

You need to edit your userChrome.css file.

Go to ~/Library/Thunderbird/Profiles/[yourProfileName]/chrome/ (creating the chrome directory if it doesn't exist) and edit userChrome.css, again creating if it doesn't exist.

For example, to edit all text in Thunderbird (except message view), enter the following:

/* Global UI font */
*
{
    font-size: 18pt !important;
    font-family: Verdana !important;
}

The result looks something like this:

Alt text

Unfortunately, I was unable to find the CSS class for the message list. Replace the * in the CSS content with that CSS class, and it should work as intended.

Daniel Beck

Posted 2010-08-12T13:54:57.970

Reputation: 98 421

Alternatively, let Thunderbird open the profile folder. In some versions, menu Help → Troubleshooting Information → Open Directory (near "Profile Directory"). – Peter Mortensen – 2020-01-04T00:14:01.970

Yes, this example is exaggerated, but how else can I prove it works? – Daniel Beck – 2011-01-26T18:30:57.627

This solution only helps a little bit, because you only increase the font - but you need to add space for that larger font as well. – None – 2012-05-31T13:43:04.790

You have to make a folder named chrome in the profile folder. On a Mac it is located in /users/NAMEOFTHEUSER/Libraries/Thunderbird/Profiles/NAMEOFTHEPROFILE/ and there you need to make a new text file named userChrome.css, as discussed in the previous answers.

listitem, treechildren::-moz-tree-row {
    min-height: 2em !important;
}

Nikola Kołodziejczyk

Posted 2010-08-12T13:54:57.970

Reputation: 11

2Can you expand your answer to explain where the user is meant to enter this code and what it will do? – Burgi – 2016-03-17T15:03:07.443

You have to make a folder named "chrome" in the profile folder. On a Mac it is located in /users/NAMEOFTHEUSER/Libraries/Thunderbird/Profiles/NAMEOFTHEPROFILE/ and there You need to make a new text file named userChrome.css. Just like the previous answers told – Nikola Kołodziejczyk – 2016-03-18T17:59:33.703

I suggest you have a read of How to write a good answer. It will explain how SuperUser works and hopefully in future prevent you from having answers deleted or from receiving downvotes.

– Burgi – 2016-03-18T21:27:48.390

I use the "Theme Font & Size Changer" add-on: https://addons.mozilla.org/de/thunderbird/addon/theme-font-size-changer/

This add-on gives you a little GUI, where you can easily change the font-size of the thread-list (and the tree), without fiddling around in the css file.

Peti

Posted 2010-08-12T13:54:57.970

Reputation: 101

Please read How do I recommend software for some tips as to how you should go about recommending software. At the very least you should provide more than just/at least a link, for example some additional information about the software itself, and how it can be used to solve the problem in the question.

– DavidPostill – 2015-09-04T11:57:26.617