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conformance · v132

v132 · expose-coarsened-cross-origin-rendertime-in-elment-timing-lcp-regardless-of-tao — conformance probe

7 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://w3c.github.io/paint-timing/#mark-paint-timing chromestatus: #5128261284397056 generated 2026-06-01T08:31:30Z by conformance-author-v1-subagent
0
pass
0
fail
0
blocked
7
total
id contract kind verdict detail
performance-observer-exists PerformanceObserver is exposed. exists
supported-entry-types-include-element PerformanceObserver advertises 'element' as a supported entry type. spec ↗ script
supported-entry-types-include-largest-contentful-paint PerformanceObserver advertises 'largest-contentful-paint'. spec ↗ script
performance-element-timing-class PerformanceElementTiming is exposed (the entry type for the element timing API). spec ↗ exists
largest-contentful-paint-class LargestContentfulPaint is exposed. spec ↗ exists
render-time-property-exists LargestContentfulPaint.prototype.renderTime is exposed. spec ↗ script
element-timing-render-time-property PerformanceElementTiming.prototype.renderTime is exposed. spec ↗ script