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Acid2 is a test page published and promoted by the Web Standards Project to expose web page rendering flaws in web browsers and other applications that render HTML . It was developed in the spirit of Acid1 , a relatively narrow test of compliance with the Cascading Style Sheets 1.0 (CSS1) standard , and was released on April 13, 2005. Like Acid1, an application passes the test if the way it displays the test page matches a reference image. Acid2 was followed by Acid3 .
Acid2 tests aspects of HTML markup, CSS 2.1 styling, PNG images, and data URIs . The Acid2 test page will be displayed correctly in any application that follows the World Wide Web Consortium and Internet Engineering Task Force specifications for these technologies. These specifications are known as web standards because they describe how technologies used on the web are expected to function.
While at the time of Acid2’s release no web browser passed the test, Acid2 was designed with Microsoft Internet Explorer particularly in mind. The creators of Acid2 were dismayed that Internet Explorer did not follow web standards and because of this Internet Explorer was prone to display web pages differently from other browsers. When such a discrepancy between browsers is encountered, web developers spend time tweaking their web pages in order to make the pages be displayed correctly in different browsers. Acid2 represented a challenge to Microsoft to bring Internet Explorer into line with web standards, making it easier to design web pages that work as intended in any web browser.
On October 31, 2005, Safari 2.0.2 became the first browser to pass Acid2. Opera , Konqueror , Firefox , and others followed. With the release of Internet Explorer 8 on March 19, 2009, the latest versions of all major web browsers now pass the test.
Tried it with the latest verison (3.0.10) of FireFox and it passed. Internet Explorer 7 failed miserably. One of the main reasons I develop websites based on how they look in FireFox.
my 3.0.9 had the ‘test’ page smileys nose go blue when I put my mouse near it, is that good?
and it looks like I need to upgrade to 3.0.10,
IanK
April 28, 2009, 8:53pm
4
Newest version of safari works fine
Why did you link to acid 2? why not acid 3? http://acid3.acidtests.org/
chino
April 29, 2009, 3:52am
7
FF 3.0.9 doesnt fair well on acid3… neither does safari 3.2.1
Its ok they both do better then IE. Though 8 might have a couple updates to it. 71 is pretty acceptable. There is a beta of the safari engine that makes it to 100 though.
matter
April 29, 2009, 3:09pm
10
opera got to 79 on the second webpage