Acid Tests

Welcome to the home of the Web Standards Compliance Acid Tests!

The Acid Tests are:

Acid3 News, Wikipedia, Director's Comments
Acid2 News, Guide, Wikipedia
Acid1 Guide, Wikipedia

The Acid Tests were originally published as part of the Web Standards Project (WaSP), a grassroots coalition fighting for standards which ensure simple, affordable access to web technologies for all. WaSP operations declared success in 2013, and the Acid Tests are correspondingly no longer being maintained. Acid3, in particular, contains some controversial tests and no longer reflects the consensus of the Web standards it purports to test, especially when it comes to issues affecting mobile browsers. The tests remain available for historical purposes and for use by browser vendors. It would be inappropriate, however, to use them as part of a certification process, especially for mobile browsers.