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conformance · v147

v147 · update-device-memory-api-limits — 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://www.w3.org/TR/device-memory/ chromestatus: #6330376953921536 generated 2026-06-04T00:47:16Z by codex-device-memory-header-fix
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pass
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fail
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6
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id contract kind verdict detail
navigator-device-memory-exists navigator.deviceMemory is exposed. spec ↗ exists
device-memory-type-number navigator.deviceMemory returns a number. spec ↗ script
device-memory-within-bounds navigator.deviceMemory is greater than 0. spec ↗ script
device-memory-valid-bucket navigator.deviceMemory returns a valid power-of-two or fraction bucket value (0.25, 0.5, 1, 2, 4, 8, 16, 32). spec ↗ script
client-hint-echo-route-opts-in The memory-inspector echo endpoint opts in to Sec-CH-Device-Memory and varies on that request header. spec ↗ script
client-hint-echo-reports-request-header The echo endpoint reports the actual Sec-CH-Device-Memory request header as a nullable value rather than simulating support. spec ↗ script