Much like to Google Chrome’s about: pages, Firefox 4 has also got some hidden about: pages that shows information about memory usage, cached files, plug-ins, add-ons and much more. Some Firefox 4’s about: pages might confuse you,some pages are for diagnostic purposes only and some might be omitted because they require query strings, here is the full list of Firefox 4’s about: pages.

1.about: Entering about: in Firefox 4 address bar shows Firefox logo, version, links to pages having list of contributors, licensing information and build configuration etc..

2.about:add-ons: Entering about:add-ons will open Add-ons Manager.

3. about:buildconfig

4. about:cache

5 .about:config

6. about:crashes : This page will show crash reports submitted by Mozilla crash reporter to Mozilla.

7.about:credits

8.about:home:

9. about:license

10.about:logo

11.about:memory

12.about:mozilla

13.about:plugins

about plugins thumb Full List of Firefox 4’s about: Pages

14.about:privatebrowsing

15.about:rights

16.about:robots

about robots thumb Full List of Firefox 4’s about: Pages

17.about:sessionrestore

18.about:support

about support thumb Full List of Firefox 4’s about: Pages

19.about:sync-log, about:sync-log1,about:sync-tabs pages shows information related to Firefox Sync that synchronized your tabs, and other info.

about sync tabs thumb Full List of Firefox 4’s about: Pages

Finally, you can get list of all these about: pages in Firefox 4 in a single about page that is with about: about.