Configuration Editor for Firefox

Revision Information
  • Revision id: 100261
  • Created:
  • Creator: AliceWyman
  • Comment: Work in progress
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: AliceWyman
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: No
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Revision Content

The Firefox about:config page lists application settings (known as preferences) that are read from the prefs.js and user.js files in the Firefox profile and from application defaults. Many of these preferences are not present in the Settings dialog.

Warning: Changing these advanced settings can sometimes break Firefox or cause strange behavior. You should only do so if you know what you're doing or if you are following trustworthy advice.

Table of Contents

Opening about:config

Type about:config in the address bar and press EnterReturn.
A warning page may appear. Click Accept the Risk and Continue to go to the about:config page.

aboutconfig