Conformance · by specification

Every specification we are measured on

81 suites from the Web Platform Tests, holding 19,554 judged tests of which 1,936 fail; 11 of those suites fail nothing at all. The 7 paged-media suites at the bottom are ours and are counted separately. Sort by whichever question you brought: the biggest areas, the weakest, or the ones losing the most tests.

Dataset 20260827-2142-2f1b575 · strict rate per suite (measurement ties count as failures, not-judged tests are excluded) · how that is measured