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conformance · v146

v146 · lcp-match-specced-behavior-for-emitting-candidates — conformance probe

6 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/largest-contentful-paint/ chromestatus: #5167930847395840 generated 2026-06-01T08:00:00Z by conformance-author-v1-subagent
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blocked
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id contract kind verdict detail
performance-observer-supports-largest-contentful-paint PerformanceObserver advertises 'largest-contentful-paint' as a supported entry type. script
lcp-entry-has-rendertime LargestContentfulPaint entries expose renderTime — the spec-aligned timestamp used to emit candidates. script
lcp-entry-has-loadtime LargestContentfulPaint entries expose loadTime alongside renderTime. script
lcp-entry-has-size LargestContentfulPaint entries expose size — used to determine candidate ordering. script
lcp-entry-has-element LargestContentfulPaint entries expose element so observers can introspect the painted node. script
lcp-emits-at-least-one-entry-on-paint Observing 'largest-contentful-paint' delivers at least one entry once the document paints content. script