Windows 10 bereikte EO (einde ondersteuning) op 14 oktober 2025. Als je Windows 10 gebruikt, lees dan dit artikel.

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Where are the about:config settings for a profile stored?

Firefox Tips en trucs
MxyL beantwoord
MxyL
MxyL

I am setting up a custom firefox profile and would like to tweak some of the options that are accessed via about:config.

I would like to know where this information is stored and whether I am able to modify these options outside of the browser.

I am setting up a custom firefox profile and would like to tweak some of the options that are accessed via about:config. I would like to know where this information is stored and whether I am able to modify these options outside of the browser.

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Gingerbread Man
Gingerbread Man

Gekozen oplossing

They're stored in the prefs.js file, which is a plain text file.

Preferences can also be set at startup using the user.js file. This file doesn't exist by default.

Preferences can also be locked with the mozilla.cfg file in the installation folder. This file doesn't exist by default.

MxyL
MxyL Vraageigenaar

Thanks, I was modifying the prefs.js file the whole time but didn't realize these were the same settings from about:config. The user.js file is also useful to know.

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