About protocol links

From MozillaZine Knowledge Base

Revision as of 19:01, 1 December 2004; view current revision
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There are a few special strings, which begin with about:, that you can type into your Location Bar.

They are listed in Mozilla source here.

  • about: — Same page as Help > About.
  • about:about — Not used any more. It may have, at one point, listed all these about: URLs.
  • about:blank — A blank page. Useful for setting as your homepage.
  • about:bloat — Unknown. (trunk mozilla builds?)
  • about:buildconfig — Reveals details about how your Mozilla build was compiled.
  • about:cache — See cache statistics and browse the cache.
  • about:cache-entry — Shows information about a cache entry. Used in about:cache links. Requires params.
  • about:config — GUI for modifying user preferences (prefs.js).
  • about:credits — Contributors, developers, and more.
  • about:logo — Displays the Mozilla logo. (Mozilla Suite only).
  • about:kitchensink — Only appeared for a short time. Still viewable from the patches on the bug.
  • about:mozilla — The famous Book of Mozilla.
  • about:plugins — Lists all your plugins as well as other useful information.


Firefox extensions add a few additional about: URIs, namely:

  • Firesomething adds two excerpts from The Book of Mozilla, Extended edition, available at about:firefox and about:firesomething.
  • InfoLister adds about:info — listing of your extensions, themes and plugins.