PIE 1.0.0 Released

I am thrilled to announce the release of CSS3 PIE version 1.0.0!

This release marks a major milestone: the dropping of the “beta” label. Our five beta releases have given us twenty-two months of solid real-world testing as you, the web community, have used it on your sites. You’ve really put it through its paces, given us invaluable feedback and bug reports and helped us squash the bugs, and now we are confident in saying that PIE is solid and reliable enough to no longer be called a beta product.

Compared to beta5, the final version 1.0.0 contains only a few fixes for major issues:

  • Fixed divide-by-zero error in box-shadow renderer
  • Fixed error when element is removed after hovering
  • Fixed error when printing in IE9
  • Fixed rendering when using browser zoom in IE7 and 8

In addition, we have added support for two new custom CSS properties: -pie-track-hover and -pie-track-active — setting these to false will disable PIE’s default automatic tracking of :hover and :active styles, which can give a small performance boost and prevent issues with scrollbars in IE7 (see issue 190).

See the full changelog for details.

Download CSS3 PIE 1.0.0 now!

Moving Forward…

While focusing on stability for 1.0.0, we’ve been very busy with other things too! The master branch in GitHub, which will become the 2.0.x line, has already seen major architectural improvements, several new features, and lots of fixes. We’ll start releasing this cutting-edge code in 2.0 beta releases soon, in parallel with the rock-solid 1.0.x line, so stay tuned!

28 Responses

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  1. Jacob

    Congratulations! Super stoked for you guys.

    May 15, 2012 3:24 pm

  2. mecvo1984

    Pie has made my IE7/IE8 clients very happy. Awesome job on this! Who says you can’t have your pie and eat it too? Rock on!

    May 15, 2012 4:14 pm

  3. Windigo

    PIE has made our newest CSS3-based layout possible – and your fix for issue 190 smooths over one of the only issues we encountered using it.

    I can’t than you enough for putting out such an elegant solution to IE’s lagging support for newer CSS features. This is awesome. 😀

    May 15, 2012 5:32 pm

  4. Ross McKay

    Congrats! I hope to get a chance to check it out properly soon, the new -pie-track-* options sound useful for optimising a recent project. Well done on getting to a 1.0 release!

    May 16, 2012 1:43 am

  5. nickb

    Nice work, Jason. Thanks for all your hard work with this, it’s a real lifesaver for all of us web devs trying to work with IE’s finnicky-ness. 🙂

    May 17, 2012 4:10 am

  6. Spudley


    As far as I’m concerned, CSS3Pie has been release-quality for a long time already, so it’s great to see it finally getting a full 1.0 release.

    Looking forward to seeing what’s coming up in v2.

    May 17, 2012 8:34 am

  7. Rob

    WOOOOOOO!!!! Congrats! I’ve been using the Beta in production for more than a year now and love it.

    May 17, 2012 1:33 pm

  8. Ole Michelsen

    Way to go Jason!

    Especially happy about the printing bug fix in IE9 🙂

    May 18, 2012 8:24 am

  9. fred

    Thanks, great work !!!
    For the v2, maybe the support of the PNG ?

    May 18, 2012 3:42 pm

  10. Evan Lovely

    Congratulations! Thanks SO much!!

    May 19, 2012 1:34 am

  11. Sly


    May 22, 2012 6:50 am

  12. Tonttu

    @fred: what do you mean by “the support of the PNG”? PIE already has an IE6 png fix.

    May 24, 2012 9:30 pm

  13. Marius

    AWESOME! Thanks for your efforts.

    May 28, 2012 6:22 am

  14. Trevor

    Thanks so much for doing this.

    June 5, 2012 1:55 am

  15. Katrin

    Have been wrestling with filters for a while. They sure do make ugly drop shadows. Then I discovered PIE. Wow!!! Jumped up from my chair when I saw my first PIE drop shadow.
    Thanks for all your work!
    And yes, transparency support would be sweet.

    June 8, 2012 3:58 pm

  16. Katharina

    Thanks for all of your work – it’s just great and helps so much.
    Keep on with the great job.

    June 16, 2012 7:16 pm

  17. bluebird

    thanks for all your work! I found a bug. element that’s position is aboslute or fixed then scroll page ,this element is not scrolling,but box-shadow is scrolling. i hope you can understand.

    July 11, 2012 8:49 am

  18. Dhaval


    I am having issue in IE7 on a:hover for background gradient effect.
    Gradient won’t appear in IE7

    I have updated PIE to 1.0.0. But it won’t help..
    Can anybody suggest something?

    July 23, 2012 10:28 am

  19. Warner Hernandez

    HI, I’m using PIE.js in a project that is based on windows server not apache, so I can’t use the stable PIE.htc.. I having some issues with dynamic content on IE that is printing the shaows and rounded borders…
    Any help will be appreciated..

    July 24, 2012 9:56 pm

  20. Warner Hernandez

    “… issues with dynamic content on IE that is NOT printing the shadows and rounded borders…”

    July 24, 2012 9:58 pm

  21. Decebalus Rex

    Thank you Jason and all team for all your effort!

    July 27, 2012 1:54 pm

  22. snowair

    Hi,I don’t know why pie.js does not work.When I test it in ie,the “alert(window.PIE);” return “undefind”.I’m sure that all the jquery and PIE.js had loaded.Can you give me a complete pie.js demo? Your home page is a pie.htc demo,but I want a pie.js demo. 3ks very much.

    August 2, 2012 9:31 pm

  23. Aldrin

    -pie-png-fix seems to be not working…

    August 24, 2012 6:09 am

  24. shoshomiga

    Make sure you don’t forget position:relative for -pie-png-fix, it works perfectly for me.

    September 5, 2012 4:10 pm

  25. alex

    Pie is great, made my life simpler and even works in gadgets. Looks good and works just as expected. Thanks!

    September 10, 2012 8:58 am

  26. Jhorton

    Well, how can integrate this to joomla 2.5?

    January 26, 2014 7:36 pm

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