The 7 hidden pages within your Firefox browser


I found myself staring at the “about:blank” parameter for an IE installation today, and that got me thinking if it works in other browsers too. It did. I’m using Firefox, and that cleared the address bar to a blank. And then I figured the developers HAD to include some more address bar commands and started looking them up. Here’s what I found:

about: A simple prompt without any parameter will display the Mozilla “about” information. Since it’s accessible from the top menus as well, it’s not quite a hidden feature.

about:buildconfig Obviously, it will show the build platform configuration and parameters

about:cache Will display info and statistics regarding your disk’s cache, including the name of your cache’s directory and a list of the entries you can find there. By default, Firefox doesn’t allow you to view the cached webpages, so this can be an useful option.

about:config Oh look, many many info. Indeed, it’s the most complex and meaningful of them all. Careful on what you plan to change here, your browser won’t run properly after if you play with the wrong things.

about:plugins Of course, what is Firefox without it’s powerful extensions? This option will display detailed information about all the plugins installed for Mozilla Firefox.

about:credits It’s time to give the credit to whoever deserves it. There’s an alphabetically sorted list of all the people that gave their contribution to the development of Firefox.

about:Mozilla This is a weird thing. It will display the so-called “Book of Mozilla”. Something similar was present in Netscape too. There’s actually no real book although the quotations might give you that impression.

Have fun browsing through your browser’s internal features.

Tags: , , ,

63 Responses to “The 7 hidden pages within your Firefox browser”

  1. prakash says:

    about:plugins is not about extensions (“Extensions are small add-ons that add new functionality to Firefox, from a simple toolbar button to a completely new feature. They allow you to customize Firefox to fit your own needs and preferences, while letting us keep Firefox itself light and lean.”), but it’s about, err, plugins (“Plugins help your browser perform specific functions like viewing special graphic formats or playing multimedia files. Plugins are slightly different from extensions, which modify or add to existing functionality.”).

  2. Ronald Lewis says:

    Great find! Thanks for sharing!

  3. drache says:

    Firefox has an extension that will allow you to choose any of these off the help menu

  4. Bill Harvey says:

    Or…….you could always just install the MR Tech About:About extension for Frefox. This puts all those so-called “hidden” pages into a drop down menu off the Help menu.

  5. […] I just love this part of mozilla/firefox. Type about:mozilla in your address bar if you’re using mozilla/firefox. You can read up on all seven about: options here. […]

  6. Try about:duck in Flock for some fun.

    Evan Hamilton
    Flock Community Ambassador

  7. Saravanan says:

    Great findings. Good info to share

  8. Etherfast says:

    @Evan Hamilton.

    Thanks for the tip.
    Happy belated birthday from our staff :)

  9. Shep says:

    there is also about:kitchensink. Firefox really does throw in everything.

  10. agloco says:

    i know about “about:config” and knows how to use it but not the other six. great find..

  11. […] The 7 hidden pages within your Firefox browser Cool list. The 7 hidden pages within your Firefox browser ? Our Picks – News, articles and reviews Geoserv. […]

  12. […] The 7 hidden pages within your Firefox browser Cool list. The 7 hidden pages within your Firefox browser ? Our Picks – News, articles and reviews Geoserv. […]

  13. Adam K says:


    another one for ya

    Moderator’s note: Edited. It’s license, not liscene ;) (Etherfast)

  14. […] Have fun browsing through your browser’s internal more | digg story […]

  15. opera rocks says:

    Get Opera.. FF is bloatware.. n00bs

  16. […] The 7 hidden pages within your Firefox browser […]

  17. Nitz says:

    Aww, c’mon now! Don’t forget about about:kitchensink !

    about:about displays all the about uri’s.


  18. […] Chi utilizza Firefox come browser per la navigazione in Internet sa che dal menu Strumenti si possono conoscere i dettagli sugli elementi aggiuntivi installati, gestire plugin ed estensioni, modificare le opzioni generali. Ma qualcuno ha verificato l’esistenza anche di un’altra strada per verificare queste informazioni, ovvero digitare determinati comandi nella barra degli indirizzi, così da poter navigare anche tra le caratteristiche interne del browser: […]

  19. […] Druga (tylko dla firefoksowców): Wklejcie w swój pasek adresu “about:Mozilla” via […]

  20. […] Ar žinote, kas nutinka ? Firefox adreso eilut? ?rašius “about:Mozilla” (be kabu?i?)? Visa filosofija viename sakinyje. Galima ?rašyti ir daugiau nauding? dalyk? su “about” priekyje… (Digg, txt) […]

  21. […] Y así, al final la bestia cayó y los incrédulos se alegraron. Pero no todo estaba perdido, porque de las cenizas surgió un gran pájaro. El pájaro contempló a los incrédulos y lanzó fuego y truenos sobre ellos. Porque la bestia había renacido con su fuerza renovada, y los seguidores de Mammon se acobardaron en el horror. de The Book of Mozilla, 7:15 Frase que se muestra en firefox al escribir en la barra de direcciones about:Mozilla. Más curiosidades sobre la barra de direcciones de firefox en Via digg […]

  22. Zilberfarb says:

    And here I was hoping it’d be porn hidden within my browser. Oh well, back to old fashioned searching.

  23. […] As 7 páginas escondidas dentro do Firefox […]

  24. […] The 7 hidden pages within your Firefox browser » Our Picks – News, articles and reviews about:buildconfig, about:plugins, about:cache (tags: FireFox mozilla reference tips) […]

  25. Full list (not only Mozilla Firefox) of about: items

  26. […] Firefox’un gizli sayfalar?na ula?maya ne dersiniz ? Link […]

  27. RitEmrE says:

    about:license ==> It displays about Firefox’s licence. :)

  28. […] Az önce Bo? Zaman Geçirgeci‘nde gezerken * “Firefox’taki 7 Gizli Sayfa” diye bir limk’e rastlad?m, as?l kaynak da burada. Bunlardan herkes gibi ilkini biliyordum sadece Ama di?er sayfalar da oldukça ilginç, özellikle sonuncusu: […]

  29. aardvarck says:

    quite a fun game i found on
    funny, too

  30. nisse says:

    there are lots more…



    some extensions add their own ‘about:’-thing:


  31. […] cool stuff like PHP Programming Basics that you can use if your interested in learning PHP and 7 pages you never knew were in Firefox. Also, I’ve installed a plug-in called Audio player for WordPress that I’m using to […]

  32. […] The 7 hidden pages within your Firefox browser […]

  33. […] favorite: Ghostfox Here are the links to some other ones that I also found interesting: The 7 Hidden Pages Within Your Firefox Browser More about:config Help and Guides Redesign Google Block Flash and Speed up page load with […]

  34. […] The 7 hidden pages… Sin comentarios + Publicaciones relacionadas Como hackear login de Windows 2000/XP pero […]

  35. […] The 7 hidden pages within your Firefox browser – Firefox keeps some secrete configuration interfaces that are not accessible through the menu. […]

  36. […] that we all know the hidden pages in Firefox, it’s time to go a bit deeper into tweaking your browser for optimal use. All of the […]

  37. […] Schreibt doch einfach mal in die URL – Zeile about:config, aber Vorsicht ! Das ist ein echt mächtiger Ausdruck der euch alles zerschießen kann ! Wenn ihr noch mehr Infos haben wollt (leider nur auf engl.) dann KLICKT HIER ! […]

  38. […] gezerken * “Firefox’taki 7 Gizli Sayfa” diye bir limk’e rastladım, asıl kaynak da burada. Bunlardan herkes gibi ilkini biliyordum sadece Ama diÄŸer sayfalar da oldukça ilginç, […]

  39. […] heeft zeven verborgen paginas die zo kan oproepen met de volgende codes. […]

  40. […] about:cache, about:plugins and more about lnks in Firefox [via] […]

  41. Joe Doyle says:

    As a simple user of Firefox, could you send
    me some advise in removing ABOUT:BLANK on my system. Thank you.

  42. […] The 7 hidden pages within your Firefox browser – Have fun browsing through your browser’s internal features. […]

  43. […] The 7 hidden pages within your Firefox browser […]

  44. […] ver la fuente aquí y el artículo original aquí (en […]

  45. Tony says:

    try about:robots

    firefox 3 only offcourse

  46. Ryan Becker says:

    You forgot about:robots!

  47. Thomas says:

    You guys missed one tho. about:robots it really works!!!! Try it!!!!

  48. […] muchos conocíamos ya, pero quizás los nuevos usuarios de Firefox desconozcan. Aprovechamos que OurPicks habla de estas páginas especiales para […]

  49. Iraê says:


Leave a Reply