About:config

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Revision as of 16:40, 29 August 2005 by Np (talk | contribs) (make link to entries more prominent, clean up)
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about:config is a special location that lists all application preferences (read from "prefs.js" and "user.js"), many of which are not present in Options/Preferences dialog. Preferences can also be changed there.

Warning: Changing these values can, in rare circumstances, break Mozilla Suite, Firefox, or Thunderbird or cause strange behavior. Only edit these preferences if you know what you are doing.

Opening about:config

  • In Firefox and Mozilla Suite, type "about:config" in the Location Bar and press Enter.
  • In Thunderbird, use AboutConfig extension. (You will be able to access about:config from the menu in Thunderbird 1.5.)
  • There's a version of AboutConfig extension compatible with Nvu here.

about:config entries

This article contains a list of valid about:config entries and their possible values. That article is a reference for what each preference does, it is not the place to edit your preferences.

References