user.js

A user.js is a configuration file that can control hundreds of Firefox settings. For a more technical breakdown and explanation, you can read more on the overview wiki page.

ghacks user.js

The ghacks user.js is a template, which, as provided, aims (❗ with add-ons ¹ ❗) to provide as much privacy and enhanced security as possible, and to reduce tracking and fingerprinting as much as possible - while minimizing any loss of functionality and breakage (but it will happen).

We aim to INFORM and give you CHOICES. No one size fits all, so customize it! And not all sites have the same requirements, so use profiles with custom versions. We won't set you wrong.

INFORMATION IS POWER. So you can make informed decisions to better protect yourself online, we aim to be:

• Accessible (provide information and simpler, less-technical descriptions if possible)
• Accountable (provide reputable references/sources, test sites, dispel bad advice)
• Change trackable (yay! we're on github now, with commits)
• Compatible (including a deprecated section, releases)
• Comprehensive (including enforcing defaults and future-proofing)
• Current and up-to-date with stable (including changelogs)
• Detailed (preference versioning, hidden preference information, explanations, and more)
• Easy to use and discuss (sections, sub-sections, numbering)
• Helpful (including a wiki with features such as add-ons, user scripts, references and more)
• Innovative (formatting, special tags, and future plans such as branches)

usage

Everyone, experts included, should at least read the implementation wiki page, as it contains important information regarding a few default settings we use. The rest of the wiki is helpful as well.

acknowledgments

Literally thousands of sources, references and suggestions. That said...

• Martin Brinkmann at ghacks ²
  • 100% genuine super-nice all-round good guy
• The ghacks community and commentators
  • Special mentions to earthlng, Tom Hawack, Just me, Conker, Rockin’ Jerry, Ainatar, Parker Lewis
• 12bytes
  • The 12bytes article now uses this user.js and supplements it with an additonal JS hosted right here at github

¹ ❗ Important: Section 0400 turns off Tracking Protection and Safe Browsing and REQUIRES that you instead use uBlock Origin. Section 0400 is NOT compulsory. See the implementation wiki page for more.

² The ghacks user.js was an independent project by Thorin-Oakenpants started in early 2015 and was first published at ghacks in August 2015. It was kept up-to-date and expanded by the original author with three major updates and articles. With Martin Brinkmann's blessing, it will keep the ghacks name.