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The HTML5 implementations of tomorrow are being developed and tested today, so don't wait and help us make the Web a better place!

HTML5 Testing Report

See HTML5 Test Suite Conformance Results (work in progress).

You can run the tests as well.


We always need help to produce tests for W3C Recommendations. The more tests we have, the better we'll improve interoperability among Web browsers. Your top features will be better deployed across various Web browsers if you help and we will also improve our HTML5 Test Suite Conformance Results as well.

The HTML testing effort is active on <> (publicly archive).

We need to improve: