Acid2

Acid2 is a test case designed to push the limits of HTML, Cascading Style Sheets (CSS), and PNG support in web browsers and HTML editors . It was created by the Web Standards Project, and follows an earlier test from 1997 known as Acid .

The page is designed to quickly identify web page rendering (computer graphics) flaws. If rendered properly, the page will show a smiley face. At the time that the test was released, no browsers rendered the page properly.

On April 27, 2005, Dave Hyatt announced that a specially patched version of Safari (web browser) (with WebCore as its layout engine, a spin-off from KDE s KHTML) had passed the test. On June 4, 2005, Allan Sandfeld Jensen announced that the KDE web browser Konqueror—for which KHTML was originally created—had been updated to pass the test as well, partially benefitting from the Safari patches.

The programmers of Mozilla and Opera (web browser) have also been putting effort into fixing the bugs identified by the test.

Microsoft has been working on improving CSS support, but does not plan on passing this test for the upcoming release of Internet Explorer 7 [http://blogs.msdn.com/ie/archive/2005/07/29/445242.aspx].

=See also=

*Layout engine *Comparison of layout engines

=External links=

*[http://www.webstandards.org/acid2/ Acid2 test] *[http://www.webstandards.org/press/releases/archive/2005/04/13/ Acid2 press release] *[http://www.webstandards.org/ Web Standards Project] *[http://weblogs.mozillazine.org/hyatt/archives/2005_04.html#008042 Dave Hyatt s updates on fixing these bugs in Safari] *[http://www.kdedevelopers.org/node/view/1129 Announcement of KHTML s passing of the test on Allan S. Jensen s blog] *[https://bugzilla.mozilla.org/show_bug.cgiid=289480 Mozilla Foundation s Acid2 tracking bug] *[http://weblog.timaltman.com/opera/ Opera s progressively improving Acid2 rendering]