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Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

How can I reduce idiotically big line spacing in bookmark sidebar?

  • 4 uphendule
  • 1 inale nkinga
  • Igcine ukuphendulwa ngu Barubiito

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Could you please explain in detail, how to use UserChrome.css (what to do), if you want to reduce line spacings?

All Replies (4)

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You can try this code to the userChrome.css file below the default @namespace line. You can adjust the height and margin-top settings to suit your needs.

@namespace url(""); /* only needed once */

/* Line height for treechildren */
:-moz-any(#bookmarks-view, #historyTree, #editBMPanel_folderTree, #placesList, #placeContent)
treechildren::-moz-tree-row {
  margin-top: -1px !important;
  min-height: 14px !important;
  height: 14px !important;

You need to create the chrome folder (lowercase) in the <xxxxxxxx>.default profile folder if this folder doesn't exist.

  • use a plain text editor (Windows: Notepad; Mac: Textedit) to create a (new) userChrome.css file in the chrome folder (file name is case sensitive)
  • paste the code in the userChrome.css file in the editor window
  • make sure the userChrome.css file starts with the default @namespace line

If you are on Windows:

  • make sure you select "All files" and not "Text files" when you save the file via "Save file as" in the text editor as userChrome.css

Otherwise Windows may add a hidden .txt file extension and you end up with a not working userChrome.css.css.txt file.

  • make sure you do not have a double .css.css file extension (userChrome.css.css.css) if it is still not working
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I'm on a Mac. I had tried this already and it didn't work. I tried adding the code from above, but closed Firefox and reopened it and it still didn't work.

I think I have it in the right place. (username)/Library/Mozilla/chrome/userChrome.css. I don't understand why it's not working.

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@ Barubiito

You need to create the chrome folder in the Firefox profile folder and place userChrome.css in this folder.

  • ~/Library/Application Support/Firefox/Profiles/<profile>/

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

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OK, now it works, thanks! I see now that I skimmed the linked page about the Profile folder too quickly and fundamentally misunderstood it. I read "profile folder" as being my user profile on my Mac, and took "~/Library/Mozilla/" to be where I should put the Chrome folder.

Thanks again.