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Over the next 35 days we’ll be talking about all of the new developer features in Firefox 3.5.

The upcoming release of Firefox 3.5 is a big upgrade for users.  It includes new privacy features, improvements in interactive performance and a new JavaScript engine that will improve the experience for users using script-heavy web sites.  These are all features that users will appreciate and talk about.

But what Firefox 3.5 really represents is a huge upgrade to the web itself.  We’ve included support for audio, video, threads in JavaScript, new canvas features, tons of new CSS features, downloadable fonts and geolocation.  While Firefox 3 was a signifigant upgrade for the web’s users, Firefox 3.5 does the same for developers.

Because of the sheer volume of new features for developers in Firefox 3.5 we’ll be spending the next 35 days featuring all of them, with two posts a day, every day.  Each day’s first post will describe one new feature in Firefox in depth – how to use it, why it’s there and some examples of what it can do for you.  The second post will be all fun – examples of demos that people have put together using all of the features that are in Firefox 3.5.

Like much of what we do at Mozilla this is a community-led project. We’ve reached out to members of the Mozilla and web developer community for posts and demos.  Some posts will be written by core Mozilla hackers, but many of them will be written by people who are just excited about the chance to use this technology in the wild.

My personal belief is that these posts represent Mozilla’s dreams for the future of the web.  We are not a company like every other browser vendor – our core mission is to improve and protect the web.  Firefox 3.5 represents what we think the next stage of the web will be – interactive applications, video, web sites collaborating and sharing information – all via the browser.  Our hope is that each of you will take what we post here, encourage other browser vendors to implement similar features where they haven’t already, and do your part to keep the web vibrant.

76 comments

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  1. Dwight Stegall wrote on June 7th, 2009 at 11:33 pm:

    So this means it will be more than 35 days before 3.5 final will be released? Oh goody more waiting. :(

    Reply

    1. Christopher Blizzard wrote on June 8th, 2009 at 6:27 am:

      No, the 35 days thing isn’t related to the release date. Odds are you won’t have to wait quite that long. :)

      Reply

  2. Kinshuk Sunil wrote on June 8th, 2009 at 1:38 am:

    following @mozhacks now and looking for all the awesome innvoations.. way to go guys :)

    Reply

  3. ibn-Hajar wrote on June 8th, 2009 at 5:55 am:

    thaaaaaaank you …..

    Reply

  4. Luis Lobo Borobia wrote on June 8th, 2009 at 5:56 am:

    Great news! I’m willing to see and try them!

    Reply

  5. Daria wrote on June 8th, 2009 at 5:59 am:

    I am so excited to see this! I love Firefox and have been using it for maybe two years now, and this is a great step in the right direction! Kudos, Firefox 3.5!

    Reply

  6. kilinkis wrote on June 8th, 2009 at 6:01 am:

    i cant wait!!! i love ffox!

    Reply

  7. Quezako wrote on June 8th, 2009 at 6:11 am:

    As a web developper, I must admit I hardly wait for the RC of Firefox 3.5! The Ogg version of Dailymotion is a perfect example of what the web should be. Let’s hope IE9 will support HTML5 (dreams…).

    Reply

  8. Christopher Blizzard wrote on June 8th, 2009 at 6:30 am:

    @Dwight No, the 35 days thing doesn’t have anything to do with the release date. It’s just a set of days we picked to talk about new features.

    Reply

  9. Admin wrote on June 8th, 2009 at 7:29 am:

    please make it fast !

    and lightweight… and maybe make some load-plugins-on-demand feature….
    i want to click the fox and it opens in less than 2 seconds

    Reply

  10. Pingback from Jeff Barr’s Blog » Links for Monday, June 8, 2009 on June 8th, 2009 at 9:32 am:

    [...] Mozilla Hacks: Firefox 3.5 for 35 Days – Dreaming About The Future of The Web – “Because of the sheer volume of new features for developers in Firefox 3.5 we’ll be spending the next 35 days featuring all of them, with two posts a day, every day. Each day’s first post will describe one new feature in Firefox in depth – how to use it, why it’s there and some examples of what it can do for you. The second post will be all fun – examples of demos that people have put together using all of the features that are in Firefox 3.5.“ [...]

    Reply

  11. David Naylor wrote on June 8th, 2009 at 9:47 am:

    Great initiative, will be following this closely!

    Reply

  12. Lucas wrote on June 8th, 2009 at 12:47 pm:

    But…I want it naaaa-ooow!

    Reply

  13. mad mike wrote on June 8th, 2009 at 1:57 pm:

    im been using fire fox since i was 18 and i hope it will be worth the wait

    Reply

  14. dude wrote on June 8th, 2009 at 2:13 pm:

    @Admin: dude, leave firefox open, what’s wrong with you?

    Reply

  15. Tejaswy wrote on June 8th, 2009 at 2:50 pm:

    I love the new Jetpack feature. Though it is in alpha

    Reply

  16. ed wrote on June 8th, 2009 at 6:08 pm:

    Good news, seems like it will be released earlier than IE9 and Windows 7

    Reply

  17. Lycanthrope wrote on June 8th, 2009 at 7:23 pm:

    Geolocation? Elaborate please. If it is what I think it is then it had better have an “Off” switch. Speaking of which, how about you try something novel with this release: instead of cramming new features in, why not leave them out? Make available, but as extras for those who want them, and not bloatware for those who would rather not.

    Reply

  18. Christopher Blizzard wrote on June 8th, 2009 at 7:26 pm:

    Geolocation is the subject of tomorrow’s feature, turns out. It’s actually off until you allow a web site access to that information.

    Reply

  19. Pingback from Freetracking.org » New Firefox hangs in limbo between beta and RC on June 8th, 2009 at 7:33 pm:

    [...] (Credit: Screenshot by Seth Rosenblatt/CNET) I also noticed that there’s a minor interface change in the Preview. Tab management buttons are now gray-on-gray, changed from the green-on-gray. Mozilla’s open source evangelist, Christopher Blizzard, is also highlighting the new developer features coming in Firefox 3.5 in a new blog. [...]

    Reply

  20. Trackback from popurls.com // popular today on June 8th, 2009 at 8:40 pm:

    popurls.com // popular today…

    story has entered the popular today section on popurls.com…

    Reply

  21. Waiter? wrote on June 8th, 2009 at 9:10 pm:

    No rush, no hurry, please!
    It’s better to release products with higher quality.

    I can wait.

    Reply

  22. Bruce A wrote on June 8th, 2009 at 9:28 pm:

    I’ve been using FF 3.5b4 for a while now and it’s pretty solid. I really appreciate the fact that I can now have the “awesome” bar search only my history, but I’d really rather just have it search typed URLs. Is there a hack to make this happen?

    Reply

  23. DevelopersAdvocate wrote on June 8th, 2009 at 9:33 pm:

    Quezako – no browser supports HTML5 in full

    What you see in Firefox 3.5 will only scratch the surface of what HTML5 has to offer

    Reply

  24. Pingback from Firefox 3.5的35天──让我们共同梦想互联网的未来 < MJiA on June 8th, 2009 at 10:51 pm:

    [...] 原文地址:http://hacks.mozilla.org/2009/06/35-days/ [...]

    Reply

  25. Pingback from The Cheap Computer Geek » Blog Archive » New Firefox hangs in limbo between beta and RC on June 8th, 2009 at 11:09 pm:

    [...] Mozilla’s open-source evangelist, Christopher Blizzard, is also highlighting the new developer features coming in Firefox 3.5 in a new blog. [...]

    Reply

  26. cg wrote on June 8th, 2009 at 11:49 pm:

    when i tried the firefox 3.5 the favicons stopped working. i like favicons so ff3.5 had to get deleted and i had to go back to the old crappy one. My question is
    Have you fixed the problem where the favicons stop displaying in ff3.5 Thankyou

    Reply

  27. pravin wrote on June 8th, 2009 at 11:52 pm:

    Bhai, ye to bata de ki kab Release hogaa ye 3.5
    aur kab tak jheelnaa hogaa…

    Reply

  28. Sankar wrote on June 9th, 2009 at 12:11 am:

    Glad to know that Mozilla is going to release 3.5 version with all awesome features. Already mozilla has a significant place in the web. Hope it keeps the same and gain more attention of the users in future with this 3.5 version.

    Thanks
    Sankar

    Reply

  29. John williams wrote on June 9th, 2009 at 1:04 am:

    Just downloaded the beta and it’s taken over all my addons, skin etc. Very nice but where’s the x64?
    I thought it was going to be x64. J

    Reply

  30. Pingback from Firefox 3.5, el 9 de julio « Tecnologia, Actualidad,y mucho mas…. on June 9th, 2009 at 3:27 am:

    [...] y completa. Para tratar de promocionar sus novedades se ha creado una iniciativa que hará que el blog de desarrolladores de Mozilla esté los próximos 35 días plagado de posts que desvelarán a estos programadores novedades [...]

    Reply

  31. Pingback from MakinMo's Tech Blog on June 9th, 2009 at 3:52 am:

    [...] engine that will improve the experience for users using script-heavy web sites.Source:http://hacks.mozilla.org/2009/06/35-days/ Jun [...]

    Reply

  32. Pali Madra wrote on June 9th, 2009 at 5:25 am:

    I will look forward to the future posts of Firefox upgrades

    Reply

  33. Pingback from Firefox 3.5 “preview” released, not a beta, not a release candidate either | BramVandeperre.be - your source for IT news on June 9th, 2009 at 5:27 am:

    [...] Mozilla’s open-source evangelist, Christopher Blizzard, is also highlighting the new developer features coming in Firefox 3.5 in a new blog. [...]

    Reply

  34. Dan wrote on June 9th, 2009 at 7:45 am:

    35th comment!

    Reply

  35. Alan wrote on June 9th, 2009 at 9:00 am:

    Is it going to be as fast as the new Opera (which is gobsmackingly fast) As a web developer i often have 4/5+ browsers open at any given moment, would be nice to see if 3.5 is a bit more lightweight too 300mb of system memory is quite the footprint.
    Even so FF will always be my ‘main’ browser of choice, thank the lawd for IE Tab Addon, means i can keep crappy IE isolated, and closed, Thank god.

    Reply

  36. Pingback from Computing and Internet: Firefox 35 for 35 days dreaming about the future of the web on June 9th, 2009 at 9:26 am:

    [...] JavaScript engine that will improve the experience for users using script-heavy web sites.Source:http://hacks.mozilla.org/2009/06/35-days/ Posted by Andy B at [...]

    Reply

  37. Pingback from Mozilla promove mostra das novas funcionalidades do Firefox 3.5 durante 35 dias | PROGRAMAS LIVRES on June 9th, 2009 at 9:54 am:

    [...] artigos não serão escritos apenas por colaboradores oficiais da Mozilla. Tal como anunciado no hacks.mozilla.org, muitos destes artigos “serão escritos por pessoas excitadas pela [...]

    Reply

  38. Pingback from Mozilla aktualisiert Firefox 3.5 Beta - Software | News | ZDNet.de on June 9th, 2009 at 10:05 am:

    [...] Christopher Blizzard hat au

    Reply

  39. Pingback from makin257's status on Tuesday, 09-Jun-09 21:25:13 UTC - Identi.ca on June 9th, 2009 at 2:25 pm:

    [...] http://hacks.mozilla.org/2009/06/35-days/ [...]

    Reply

  40. Ben wrote on June 9th, 2009 at 7:55 pm:

    Long live the mozilla.org red T-rex logo!

    Reply

  41. Yuki wrote on June 9th, 2009 at 8:28 pm:

    Hope you finally fixed all the Japanese character displays in Java (most work, but MOST is NOT all, and ALL is the standard, since ALL worked in versions prior to the number 3).

    If it’s not fixed … bye bye, so long, sayounara, and see ya someday. It’s been broken now for WAY TOO LONG.

    Reply

  42. WasDam wrote on June 10th, 2009 at 2:18 am:

    The version 3.5 is very slow! already consumes 140Mo from the start!
    There are also bugs display some site!
    Frankly, as an advanced user of firefox (since its first version) that browser is deteriorating!

    Reply

  43. Pingback from t3n-Linktipps: Superflaches iPhone-Headset, SEO-Tipps, Webentwickler-Tools, PHP-BBQ-Tour und Mozilla blickt in die Zukunft » t3n Magazin on June 10th, 2009 at 8:22 am:

    [...] Über einen Zeitraum von 35 Tagen will Mozilla mit Informationen und Inspirationen für Entwickler und Technikbegeisterte den Zeitraum bis zur Einführung von Firefox 3.5 verkürzen. Jeden Tag sollen dazu in Blog-Beiträgen oder Demo-Videos die neuen Möglichkeiten aufgezeigt werden, die die neuen Funktionen und Web-Technologien aus Firefox 3.5 bieten: Ein Blick in die Zukunft des World Wide Web. [...]

    Reply

  44. Soner Gönül wrote on June 10th, 2009 at 10:13 am:

    Following for updates http://twitter.com/sonergonul

    Reply

  45. Tagada wrote on June 10th, 2009 at 10:21 am:

    The new relaease of Firefox 3.5 b99 works pretty well.
    Acid test 3: 93/100 no improvement compared to Firefox 3.5 b4
    Long live to Firefox

    Reply

  46. That Indian kid wrote on June 10th, 2009 at 12:49 pm:

    W00t Fx 3.5 is coming!

    Reply

  47. Liz wrote on June 10th, 2009 at 1:10 pm:

    Appreciate the work you’ve all done. I’m on a 64bit Ubuntu and hope for an integrated version.
    My vision would be rather separate versions, for developer and average user (like me). Preventing an overload of features I’d need to opt out, browsing lightweighted and with self response. I’d appreciate very much if you’ll give it a thought, thanks.

    Reply

  48. Pingback from Firefox 3.5 el… 9 de julio? | Geek Urbano on June 10th, 2009 at 4:30 pm:

    [...] y completa. Para tratar de promocionar sus novedades se ha creado una iniciativa que hará que el blog de desarrolladores de Mozilla esté los próximos 35 días plagado de posts que desvelarán a estos programadores [...]

    Reply

  49. Pingback from Firefox 3.5 for 35 days - dreaming about the future of the web | BlogoFlux - Information Technology Blog on June 10th, 2009 at 5:15 pm:

    [...] Source You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, [...]

    Reply

  50. ceronegativo wrote on June 10th, 2009 at 5:19 pm:

    Great work!

    Reply

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