Mozilla-specific About: URIs
Many of these can also be used in Thunderbird, by setting them as the “Mail Start Page”. Also, some extensions define additional about: URIs not listed here.
| URIs | Mozilla Application Suite / SeaMonkey | Mozilla Firefox |
|---|---|---|
| about:bloat | Displays BloatView output (disabled in release builds). Superseded by about:memory on Gecko 1.9.2 | |
| about:blocked | Shows the malware protection page used when the browser identifies a page as not safe for viewing. Firefox 3+ | |
| about:addons | Shows installed addons, plugins, themes, and provides an interface for installing new addons. Firefox 4+, SeaMonkey 2.1+ | |
| about:buildconfig | Shows the arguments and options used to compile the build in use | |
| about:cache | Shows information about the Cache Service. Number of entries, location of cache, size of cache, etc. for both memory and disk cache. | |
| about:cache?device=memory | Shows individual entries in memory | |
| about:cache?device=disk | Shows individual entries on disk | |
| about:cache?device=offline | Shows individual entries for offline viewing. Gecko 1.9+ | |
| about:cache-entry | Shows information about a cache entry. Used in about:cache links. Requires parameters. | |
| about:certerror | Shows the error page used when an SSL/TLS certificate is untrusted or otherwise invalid. | |
| about:config | Shows an interface for viewing and setting a wide variety of configuration variables, many of which are not otherwise accessible through the GUI (options panels) | |
| about:crashes | Shows details of crashes submitted by Mozilla's crash reporter. Firefox 3+, SeaMonkey 2.0+ | |
| about:credits | Shows a list of all those who contributed to Mozilla | |
| about:feeds | Shows the page used when clicking the rss feed icon in the address bar. | |
| about:home | Shows the Firefox 4 default home page. | |
| about:jetpack | Shows an interface for viewing and setting the JetPack extension | |
| about:licence | In the British English localised version, shows the content of about:license but with all occurrences of license used as a noun replaced with licence (see American and British English spelling differences). Not available in Firefox 4 | |
| about:license | Shows the Mozilla Public License (and the Netscape Public License) for the piece of software. Gecko 1.8+ | |
| about:logo | Shows the logo used on the about: screen | |
| about:memory | Shows memory usage. Firefox 3.6+ | |
| about:mozilla | Easter egg: Shows a verse from The Book of Mozilla | |
| about:neterror | Shows the error page used when the browser could not access the requested path. | |
| about:newtab | Shows a grid of your favorite and most-visited websites, Firefox 13+. | |
| about:permissions | Shows permissions for sites on Firefox 6.0a1. | |
| about:plugins | Shows installed, currently enabled plug-ins. | |
| about:privatebrowsing | Can be used to switch to private browsing mode, shows a message indicating that Firefox will not remember any history for the current session. Note: It does not show URI on the address bar. | |
| about:rights | Shows licensing information. | |
| about:robots | Easter egg, beginning with March 8, 2008 trunk builds. The title of a window contains a citation from The Day the Earth Stood Still. | |
| about:sessionrestore | Shows an interface for viewing about last session | |
| about:support | Shows troubleshooting information. Firefox 3.6+, SeaMonkey 2.1+ | |
| about:sync-tabs | Shows list of tabs from other computers. Requires enabled synchronisation. | |
Read more about this topic: About URI Scheme