Firefox is the second most widely used browser right after Internet Explorer. It is fast and efficient but its true strength lies in the hundreds of plugins that add to its functionality and make it indispensable. There are several hidden features of Firefox that are tucked away neatly under the hood. Here is a big long list (with screenshots) of the hidden gems for everyone curious as to what the Mozilla developers packed inside of it. To check them out for yourself open up Firefox and type about: … in the URL bar and hit enter. If you have your own set of hidden gems on Firefox leave them in the comments.

  1. about:

    2. firefox-about

  2. about:blocked

    3. firefox-about-blocked

  3. about:buildconfig

    4. firefox-about-buildconfig

  4. about:cache

    5. firefox-about-cache

  5. about:config

    6. firefox-about-config

  6. about:crashes

    7. firefox-about-crashes

  7. about:credits

    8. firefox-about-credits

  8. about:license

    9. firefox-about-license

  9. about:logo

    10. firefox-about-logo

  10. about:mozilla

    11. firefox-about-mozilla

  11. about:neterror

    12. firefox-about-neterror

  12. about:plugins

    13. firefox-about-plugins

  13. about:rights

    14. firefox-about-rights

  14. about:robots

    15. firefox-about-robots