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What file is Firefox using for userContent.css

rccharles replied
rccharles

I'd like to know if Firefox has found my css modifications. Is there a way of querying the location of the file that Firefox is using? I had a situation where Firefox didn't find my userContent.css. How would I diagnose this.

I find this code fragment around the internet. I attempted to run it, but got an error.

Components.classes["@mozilla.org/file/directory_service;1"].getService( Components.interfaces.nsIProperties).get("ProfD", Components.interfaces.nsIFile).path

I got these errors. Use of getPreventDefault() is deprecated. Use defaultPrevented instead. common-min.0cd8251fe9d4.js:4:25928 Error: Error retrieving geoip data

common-min.0cd8251fe9d4.js:10:17360

"The version of Tabzilla you are using is deprecated and will be removed in the future.

Please update to the new static version here: https://github.com/mozilla/tabzilla/" tabzilla.js:612:17 The Components object is deprecated. It will soon be removed.

I'd like to know if Firefox has found my css modifications. Is there a way of querying the location of the file that Firefox is using? I had a situation where Firefox didn't find my userContent.css. How would I diagnose this. I find this code fragment around the internet. I attempted to run it, but got an error. Components.classes["@mozilla.org/file/directory_service;1"].getService( Components.interfaces.nsIProperties).get("ProfD", Components.interfaces.nsIFile).path I got these errors. Use of getPreventDefault() is deprecated. Use defaultPrevented instead. common-min.0cd8251fe9d4.js:4:25928 Error: Error retrieving geoip data common-min.0cd8251fe9d4.js:10:17360 "The version of Tabzilla you are using is deprecated and will be removed in the future. Please update to the new static version here: https://github.com/mozilla/tabzilla/" tabzilla.js:612:17 The Components object is deprecated. It will soon be removed.

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Zgjidhja e Zgjedhur

You need to evaluate that code in the Browser Console to find the path to the current profile folder.

Components.classes["@mozilla.org/file/directory_service;1"].getService( Components.interfaces.nsIProperties).get("ProfD", Components.interfaces.nsIFile).path

You need to set devtools.chrome.enabled to true on the about:config page to enable the command line in the Browser Console.

Paste the JavaScript code in the command line. Press the Enter key to evaluate the JavaScript code.


The built-in Page Inspector also shows rules added via userContent.css to a website as (user agent) rules with a link to the userContent.css file.


You can use the DOM Inspector to see what rules are applied to an element. This includes rules added via userChrome.css and userContent.css.

See also: