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- Makes a smiley face on the screen if rendered correctly
- Used to test website display and rendering flaws in web browsers
- Reveals if a browser is up to current Web standards
- Tests features like transparent PNGs, CSS tables and moreThe Web Standards Project: Acid2: The Guided Tour
- First browser to pass Acid2: OperaLiveMint.com: Browser Wars (September 9, 2008)
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Acid2 is a Web Standards Project used primarily to test Web browsers for flaws. It is one of three Acid tests developed to promote a consistent level of Web standards across browsers. It was followed by Acid3 in 2008.




