Acid1

Acid1
The "reference rendering" for Acid1
Website type
Web standards test
Available inEnglish language
OwnerThe World Wide Web Consortium
CreatorTodd Fahrner
Websiteacid1.acidtests.org Edit this at Wikidata
CommercialNo
RegistrationNo
LaunchedJanuary 26, 1999
Current statusOnline
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Example of a failed Acid1 test
Easter egg in Internet Explorer 5 for Mac

Acid1, originally called the Box Acid Test, is a test page for web browsers. It was developed in October 1998 and was important in establishing baseline interoperability between early web browsers, especially for the Cascading Style Sheets 1.0 specification. As with acid tests for gold which produce a quick and obvious assessment of the quality of a piece of metal, the web acid tests were designed to produce a clear indication of a browser's compliance to web standards.