Editing My Firefox Settings (section)

== User.js Templates & Generators ==

Instead of manually configuring <code>about:config</code>, you can use pre-configured <code>user.js</code> files.

To use a <code>user.js</code> file, you need to place it in your Firefox profile directory. This file is read every time Firefox starts, overriding any matching settings in <code>about:config</code> or <code>prefs.js</code>:

# Navigate to <code>about:support</code> in your URL bar.
# Find the '''Profile Directory''' row and click the '''Open Directory''' button.
# Create a new text file in this directory and name it exactly <code>user.js</code>.
# Open the file using a text editor.
# Paste your desired configuration settings from the templates below into the file and save it.
# Restart Firefox for the changes to take effect.

'''Generators:'''
* [https://ffprofile.com ffprofile.com] — Interactive <code>user.js</code> generator.
** ''Note on User-Agent Spoofing:'' While you can spoof your user-agent to a more common one (e.g., Chrome), doing so on Firefox can actually make your browser fingerprint [https://deviceinfo.me more unique] ([https://www.billdietrich.me/ComputerPrivacy.html alternative tools list]). Because Firefox's engine behaves differently than Chromium, mismatched engine/user-agent data is easily detectable. For common agents, see [https://techblog.willshouse.com/2012/01/03/most-common-user-agents/ Willhouse] or [https://www.whatismybrowser.com/guides/the-latest-user-agent/chrome WhatIsMyBrowser].

'''Popular Pre-configured Templates:'''
# [https://github.com/arkenfox/user.js/raw/master/user.js Arkenfox] (Highly recommended, well-known)
# [https://raw.githubusercontent.com/pyllyukko/user.js/master/user.js Pyllyukko] (Security focused)
# [https://git.nixnet.services/Narsil/desktop_user.js/raw/branch/master/user.js Narsil's user.js] (Privacy focused) (I use this one)
# [https://codeberg.org/polarhive/vulpes Vulpes]
# [https://git.nixnet.services/Narsil/palemoon_user.js Narsil's user.js for Pale Moon] (Privacy focused)
# [https://git.sr.ht/~krathalan/firefox-complement krathalan config]
# [https://github.com/simeononsecurity/FireFox-Privacy-Script simeononsec FireFox Script]
# [https://vermaden.wordpress.com/2024/03/18/sensible-firefox-setup/ vermaden's Sensible Setup]