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conformance · v144

v144 · predictable-reported-storage-quota — conformance probe

4 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://storage.spec.whatwg.org/#dom-storagemanager-estimate chromestatus: #4977371751645184 generated 2026-06-01T08:03:56Z by conformance-author-v1-subagent
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pass
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fail
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blocked
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id contract kind verdict detail
storage-manager-exposed navigator.storage exposes the StorageManager interface. spec ↗ exists
estimate-returns-promise navigator.storage.estimate() returns a promise that resolves to a StorageEstimate. spec ↗ script
estimate-quota-is-number StorageEstimate.quota is a number — the predictable value the spec asks for. spec ↗ script
estimate-usage-is-number StorageEstimate.usage is a number. spec ↗ script