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Address Bar

  • 16 replies
  • 4 have this problem
  • Last reply by tunescool

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how can i get this new thing wear the address bar gets all big everytime i start a new tab. i have a chrome.css file

how can i get this new thing wear the address bar gets all big everytime i start a new tab. i have a chrome.css file
Attached screenshots

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thank you

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Hello tunesrcoolll,

This is a temporary fix, but I am hoping that they will change their mind
and give us the option to permanently disable this new behavior.

Would you do this please :

Type in the address bar about:config and press Enter. (ignore the warning)

Type in the search bar and look for the preference :


and set its value to false

Do the same with these preferences :




Then close and restart Firefox.

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Chosen Solution

thank you

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tunesrcoolII said

thank you

My pleasure !

You inadvertently marked your own post as Chosen Solution; you can recitify it by clicking on the "Undo" button to the right and then mark my (first) post as Chosen Solution ("Solved the problem" button to the right).

Thank you in advance !

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I just noticed that you have a userChrome.css file; would
you please take a look at cor-el's post in this thread :

But what might interest you more is this, what I call "masterpiece"
written by my brilliant fellow contributor jscher2000 :

Modified by McCoy

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If you toggled the update1 preference to false, this would be for future reference only because it applies to the "new" bar:

Since you are a userChrome.css user, I'll mention that I posted some code to tame the enlargement and tweak the drop-down. If you have time on your hands, you could take a look.

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@ jscher2000 :

See my last post ......

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there was a firefox update and i set ll these already to false, they didnt change. but its doing it again can someone help

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Hi tunesrcoolII, it's true, the browser.urlbar.update1 preference has no effect in Firefox 77+.

You can tame the enlargement effect using custom style rules. Since you already have a userChrome.css file, you can find a set of rules to add in this file:

Does that work on your Firefox?

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i got it off without userchrome

but it takes suggestions off if anyone can help id like those back

userchrome will not work for me. maybe because i use mac

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The browser.urlbar.disableExtendForTests pref is meant for testing purposes when the code has been compiled and has some side effects like you probably noticed.
You will have to use code in userChrome.css to make this work properly.

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. On Mac you can use the TextEdit utility to create the userChrome.css file as a plain text file.

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


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no userchrome doesnt work for me, i tried 5 different times

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Can you give more detail what you have tried ?

You did create the chrome folder in the profile folder and made sure that userChrome.css (name is case sensitive) is a plain text file (i.e. not a rich text file) ?

Can you attach a screenshot ?

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ive had a userchrome file for 5 or 6 years, i know where it goes, i have code in there now i know is working

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Some code might not work with the XUL @namespace line, so you can try to place the CSS code above this line.

@namespace url(""); /* only needed once */
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i just looked i dont have the namespace line. maybe because its mac is why it doesnt work

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heres a good way with userchrome, i couldnt get it to work like everyone else but this worked. version 77

it has preferences, just choose what you want and the page creates the css for you