Firefox Inside Firefox

Hellow Fellows!
You know that many of us spend lot of our computing time on the internet and most of that time we use Firefox tabs to open all our favorite sites and services inside Firefox right?, yes, Gmail inside Ff, Yahoo inside Ff, ebay inside Ff, Banking inside Ff ect. ect. ect… With all these favorites inside Firefox, How about opening Firefox inside Firefox? Not bad ha? and its really easy too! just type in this url in a new tab in Firefox and there you go! Firefox inside Firefox!


Disclaimer: I guarantee that this will work with Firefox. But I have no responsibility of any damage that cause Internet Explorer users by Using this with IE to Open Firefox inside IE 😆

update: feel free to visit my new blog for more Firefox tricks!

Author: SeeJay


316 thoughts on “Firefox Inside Firefox”

  1. Actually, this means that instead of opening a new window to do searches on a different topic than my first window, I can open up a sub-tab in order to keep everything within a single window. 😉

  2. Try pasting the url in the address bar of the new FF. Firefox inside Firefox inside Firefox inside Firefox inside Firefox inside Firefox inside Firefox…

  3. this isn’t really a feature, its just a side effect of the fact that firefox’s UI is written completely in XML.

    chrome://browser/content/browser.xul is the url that firefox.exe opens when you run it. if you change it (mozilla firefox\chrome\browser.jar\content\browser.xul), you can change the interface of firefox however you like.

  4. nice one. But it occupied huge memory and my FF got crashed after opening two tabs in main FF and each tab with one FF inside.

  5. This ‘trick’ is STUPID because it doesn’t work on IE!!

    I want Firefox in IE because then it will be more stable and more secure!!

    1. You can use the ActiveX trick to run Firefox in IE. It won’t make IE more stable, though. It might give it a memory leak.

  6. Do the same thing in other Mozilla / Netscape / Sea Monkey browsers and see the browser render itself within it.

  7. Very cool trick! You can do this again in the new Firefox and you have FF in FF in FF. 😀
    And Again and you’ve got FF in FF in FF in FF. And so on!
    Thats so funny! XD

    (Sorry if I made mistakes, i’m from germany)

  8. I’ve tried it here, but it didn’t work
    When i double clicked in the internal firefox (to create a new tab), a tab got created in the main firefox and in the internal firefox.
    When I went to an url in the second tab in the internal firefox tab, firefox opened it in the first tab.

    I run firefox on linux

  9. Well for all those guys who are trying this on IE – too bad. Can’t imagine people can be so dumm!!
    This is a feature based on FF, IE engin works totally diffrent way i.e., it will not work.
    Any how i really don’t see use of this as in browsers like deepnet and avant you can open Multiple tabs in multiple groups anyways.

  10. So if the browser-in-a-tab honors your home page settings and chrome://browser/content/browser.xul is your home page you have an infinite number of FF’s. Cool!

  11. Nice one. But the only use I can see for this is grouping sites into categories. If you visit a lot of sites at once you could group all your “A” type sites in a Ff browser under one tab and you “B” types in another…

  12. This is amazing… I tried if it can go infinitely….

    Well, it went and i got confused, what i am using

  13. Its like soo awesome!!

    And in that friefox we can open another firsfox , in that another, in that another and like that lolx!!

    so cool man, u rock!!

  14. Also for those times where a site demands IE, theres an IE Tab extension which allows you to right click and “open in IE tab”….which uses the IE engine to render in a new Ff tab.

  15. FYI– The abbreviation you are seeking is “etc.,” as in the short version of the word “etcetera,” which is from the latin words “et cetera,” meaning “and others of the same kind.” I used to make the same ‘ect’ mistake myself many years ago, learning the origin of the word helped me remember.

  16. I would try it… but I use Opera.
    Opera is cool, but this crap sounds great… Thinking about getting Firefox 😀

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  18. very cool! i don’t know if you guys have tried this one too but here it goes, type about:mozilla in your firefox address bar and see what happens.

  19. there is an actual split windows plugin for Ff and it shows the same…. drives me crazy that the windows are not on the same level for comparing two sites….

  20. If you’ve EVER worked extensively with Firefox’s code, or coded an extension, you would know this. FF is coded in Java and XUL, which it is also coded to open. You can find this chrome file in the firefox directory in My Programs.

  21. I don’t understand how this is useful. To do a new search just open a new tab. It is all still in the same window.

  22. Cool, but the CPU usage crashed my work computer. It’ll probably work for me at home, but I’m not sure what I’d use it for.

    Now if I could figure out how to split the Firefox window between two sites …

  23. Hey, thanks for this trick. I’ve already thought of some situations in which this could be useful, such as:

    Opening user profiles in a mini-FF inside the social networking site’s main tab.

    Opening different articles from in mini-FF tabs.

    The list goes on…

  24. This is very, very useful for me. Thank you!

    You see… I regularly have 5~10 firefox windows open at the same time (each with upwards of 10 tabs inside them)… The last time I had to quit firefox (I usually hibernate instead of shutting down my PC), I had 105 open tabs. This will be great because I can keep various firefox windows inside the main window and sort by the type of info I’m working with.

    I figure I’m probably on the weird side of things though.

  25. hey, this trick is really handy! it’s so useful when you need to open many tabs to search for one particular info.

    thanks for sharing!

  26. this is great, is there some way to open a new ff window in this manner but have the new window be in safe mode? (or some other slightly dumbed down version?) With all the addons I have, this procedure makes ff crash every time, but a new window that doesn’t load the addons would still be great. also, is there a way to make it such that changes made to the sub – window would not result in changes to the master window on restart?

  27. I find it amusing that all these people complain about it being “pointless” because it crashes their browsers, cause that’s pretty damn lame, to be honest. If my PC can handle it, I imagine most can. I opened 5 Firefox windows (skinned) within each other on Vista Ultimate with 1gb of RAM and an AMD Athlon 64 X2 4200+ Processor without the slightest hint of lag.

    PS. Before I get flamed myself, this post is not to flame posters, only to point out that some are flaming the original topic because of their problems.

  28. Isnt there any way to open firefox inside IE – I love firefox but my office NT rules wont let me to download it….. Sad , If any one knows please let me know how…..

  29. I reached your site through Digg. This is something new and something I did not imagine. Many folks commented here would have the same experience I hope.

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  31. Хотя я уже и читал подобные посты, но не дает мне это покоя. Спасибо за пост.

  32. Очень интересно. Но чего-то не хватает. Может быть, стоит добавить каких-нибудь картинок или фото?

  33. Очень интересно. Но чего-то не хватает. Может быть, стоит добавить каких-нибудь картинок или фото?

  34. Очень интересно. Но чего-то не хватает. Может быть, стоит добавить каких-нибудь картинок или фото?

  35. Хорошо пишете. Надеюсь, когда-нибудь увижу нечто подобное и на своем блоге…

  36. Все отлично, но вот у любого блога постоянная проблема с трансляцией rss! Хотелось бы и с коментами получать. Но нет. Это вообще решаемо? 🙂

  37. Очень интересно!!! Только не очень могу понять как часто обновляется ваш блог?

  38. Бошка разболелась. Надо что-то править в своем бизнесе… Да и грядущая перерегистрация ООО – невероятно актуальная тема на текущий момент. Не прошлепать бы. Проблему указано решить за полгода. Мрачно…

  39. Последний из этих афоризмов уже цитировался в одной из дискуссий. Но мне очень хочется привести его и здесь. А ещё войти в круг уважаемых авторов:

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  42. Actually, this means that instead of opening a new window to do searches on a different topic than my first window, I can open up a sub-tab in order to keep everything within a single window

  43. Actually, this means that instead of opening a new window to do searches on a different topic than my first window, I can open up a sub-tab in order to keep everything within a single windo

  44. hey it is just cool it helps me in organising multiple tabs inside one tabs in firefox4 beta 7 and saves a lot of my memory

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  47. Actually, this means that instead of opening a new window to do searches on a different topic than my first window, I can open up a sub-tab in order to keep everything within a single window. 😉

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