← back to v151 · incognitostaticstoragequota

conformance · v151

v151 · incognitostaticstoragequota — 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://storage.spec.whatwg.org/#dom-storagemanager-estimate chromestatus: #5143175657291776 generated 2026-06-01T08:13:45Z by conformance-author-v1-subagent
0
pass
0
fail
0
blocked
6
total
id contract kind verdict detail
storage-manager-exposed navigator.storage is exposed — the StorageManager surface this change tightens. spec ↗ exists
estimate-is-function StorageManager.estimate() is a function on the prototype. spec ↗ typeof
estimate-resolves-with-quota-and-usage estimate() resolves to a StorageEstimate dictionary with numeric `quota` and `usage` fields. spec ↗ script
estimate-quota-bucketed Per the bug-fix shape, the quota in non-unlimited contexts is bucketed to at least 10 GiB plus usage; this checks the floor invariant the spec text describes. spec ↗ script
persisted-callable navigator.storage.persisted exists alongside estimate() — both methods are part of the StorageManager surface this feature touches. spec ↗ typeof
estimate-no-incognito-fingerprint-channel After the fix, calling estimate() twice in succession returns a stable quota value — no jitter, no per-call surface that exposes available RAM. spec ↗ script