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change tab/address bar height

  • 15 replies
  • 39 have this problem
  • Last reply by cor-el

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Just upgraded to FF 29. I mean it looks like Chrome with one big exception. With the tab bar/address bar/favorites bar on FF29 I have effectively lost 3/8" of viewing area compared to FF 28. There needs to be a way to shrink the height so I can get more viewing area. I look forward to any comments. Thanks

Chosen solution

Classic Theme Restorer adds a setting for small icons to the Customize window.

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All Replies (15)

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It might look that way, but I invite you to make a screenshot of Firefox 29 and Firefox 28 and compare them to each other.

You'll see that Firefox 29 actually uses less space vertically, than it did before!

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Thank you for your prompt reply, but, I'm not crazy. I measured both FF 28 vs FF 29 and there is a 3/8" difference on many web pages

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Do you have the browser window Maximized?

When the window isn't Maximized, the "titlebar" takes up the same space as the upper-right Minimize / Maximize / Close icons pushing the Tab Bar downward.

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Thanks for you comments. I tried something. I uninstalled and reinstalled FF29 and now everything is about the same. I'm not sure what happened during the initial installation of FF29, but, everything is about the same. I'm confused. Could someone explain this to me? Thanks

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Arejfour, I'm glad you resolved it this way, but I'm quite curious as to why this happened. I don't suppose you have screenshots around of the way it was and the way it is now?

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I think what happened is; Old Firefox had a small icon option. 29 does not.

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Thanks for the reply. I think you're probably on the right track. From what I can tell the favorites bar has more height and the text is larger. Would be nice if there could be some way to adjust the bar heights and text size. Thanks

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Chosen Solution

Classic Theme Restorer adds a setting for small icons to the Customize window.

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Try the following add on "australis small icon. It makes the tool bars thinner.

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I'm sorry about hijacking this thread, but I just spent 1/2 hour looking for how to start a new thread and couldn't find out how to do so. I've tried the "Ask a question" tab but didn't get anywhere with it. If anyone can shed some light I'd appreciate it.

Okay, to my own issue. I'm using Firefox 29.0.1 on Windows 8.1. I have more than one user account on the same machine. Whenever I use Ctrl+Alt+Del to switch to another and return to the original user the height of the Tabs Bar is reduced. To illustrate this I've posted a screenshot where you will see the top is a tab is cut off.

I've noticed that I don't even have to log in to another account for the Tabs Bar to shrink. All I have to do is hit Ctrl+Alt+Del, then "Swith user" and then sign back on to the same user account and I'd find the same issue.

Is this a bug? How do I report a bug? Is this the correct venue for reporting bugs?


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Joe, just go to the top of any page and press the Ask A Question link. When the new page opens, write down you question in brief, then press Enter. The system will try to find what you want and display several links to other questions and support information. If none of them help, press the bar on the bottom. You can then change your question, and give as many details as you can. Please do so now.

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Thanks for the quick reply Fred. I finally figured out that I have to type my question in the grey bar at the bottom. Please ignore my post above since I'll be starting my own topic now.

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Tabs are ~20% TALLER on version 31.0 vs 21.0

If you actually do More than look, and Measure them you will find the difference is considerable. This may be fine for those who never stray past 10 open tabs, get to 50 or more and that is valuable real estate given over to softish corners.

Modified by Legbiter

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Australis Small Icon Is USELESS.

The Rows take up EXACTLY the same SPACE as before (5 Rows = 32mm High), just the tabs are squeezed upwards leaving a translucent bar in the unused space.

The same as squashing all the chocolates flat inside the box, chocolates are shorter, but the box stays the same.

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You can reduce the height of the Tab Bar with code in userChrome.css.

You can look at this mozillaZine thread for some examples and possibly ask for assistance.

  • Create the chrome folder (lowercase) in the <xxxxxxxx>.default profile folder if this folder doesn't exist
  • Use a plain text editor like Notepad 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 that the userChrome.css file starts with the default @namespace line
  • Make sure that 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.txt file

You can use this button to go to the currently used Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)

I use this code to have the Tab Bar on bottom with a height of 25px. It is best to set all heights to the same value as I've seen unusual CPU activity when there are enough tabs open that scroll buttons appear.

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

/* Tab bar: adjust height - chrome://browser/skin/browser.css */
#TabsToolbar {-moz-box-ordinal-group:10000!important; height:25px!important; margin-top:1px!important}
#tabbrowser-tabs {height:25px!important; min-height:25px!important; border-left: 1px threedshadow solid}

.tab-background-end[selected=true]::before {
#tabbrowser-tabs .toolbarbutton-icon        {padding-bottom:3px!important}
#tabbrowser-tabs .tabbrowser-tab .tab-label {padding-bottom:1px!important}