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conformance · v143

v143 · web-install-api — 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://github.com/w3c/manifest/pull/1175 chromestatus: #5183481574850560 generated 2026-06-01T12:00:00Z by conformance-author-v1-subagent
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pass
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6
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id contract kind verdict detail
navigator-install-exposed navigator.install can be feature-detected. spec ↗ script
navigator-install-is-function navigator.install is a function when the Web Install API is exposed. spec ↗ script
install-zero-arg-signature navigator.install() returns a Promise when the Web Install API is exposed. spec ↗ script
install-requires-secure-context navigator.install is only exposed in secure contexts. spec ↗ script
install-one-arg-accepts-url navigator.install(url) accepts a string URL and returns a Promise when the API is exposed. spec ↗ script
beforeinstallprompt-still-exists BeforeInstallPromptEvent remains exposed for the existing install affordance. spec ↗ exists