MozillaZine

About:config

From MozillaZine Knowledge Base

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Revision as of 18:00, 3 October 2004

What is about:config

about:config is a special page that lists all Mozilla preferences (read from prefs.js and user.js), many of which are not present in Options/Preferences dialog. Preferences can be changed there.

Warning: Do not change any values unless you really know what you are doing.

See about:config Entries and preferential.mozdev.org for the list of available preferences with explanations.

See this page for step-by-step guide on adding and changing prefs (with screenshots).


Opening about:config

In Firefox and Mozilla you can just type about:config in the Location Bar.

In Thunderbird you could set your mail start page to chrome://global/content/config.xul (but you can't until bug 242436 is fixed).

You can also use Preferential extension.