How To: Remove folder icons from bookmarks toolbar in FF3
It really bugs me that there’s no option for removing those space hogging, ugly looking folder icons in the Firefox Bookmarks Toolbar

Sure, you can change the theme to one that’s less space consuming, if you can find one without the big shiny icons and the bright colours. I had one (a pretty nice one too macfox II graphite) but unfortunately it’s not compatible with Firefox 3 RC2. And the default look of the new Firefox isn’t that bad, so i looked for a way to remove the icons. And praise the gods of Google, i found a way:
- navigate to your Firefox profile folder. It could be something like C:\Documents and Settings\your_username\Application Data\Mozilla\Firefox\Profiles\your_profile_folder\chrome (yeah, it’s a long way);
- check if there’s a userChrome.css file. If not, make one and input the following code:
/* Kill bookmark folder icons in the Personal Toolbar */
toolbarbutton.bookmark-item[container=”true”] > .toolbarbutton-icon {
display: none;
}
- save the file and restart Firefox. It should look now like this:

If you hate the ugly icons but like the idea of having a customized icon for your bookmark groups, there are some answers here.