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conformance · v150

v150 · web-speech-api-on-device-recognition-quality — 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://webaudio.github.io/web-speech-api/ chromestatus: #5136859632107520 generated 2026-06-05T21:18:22Z by manual-codex-devtools-mcp
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id contract kind verdict detail
speech-recognition-exists SpeechRecognition or webkitSpeechRecognition exists in window. spec ↗ script
speech-recognition-available-static-method SpeechRecognition.available() is exposed as the static capability query for local speech packs. spec ↗ script
speech-recognition-install-static-method SpeechRecognition.install() is exposed for downloading local packs using the same options dictionary. spec ↗ script
speech-recognition-process-locally-member SpeechRecognition exposes processLocally so recognition can be constrained to on-device processing. spec ↗ script
quality-option-accepts-all-tiers SpeechRecognition.available() accepts quality values command, dictation, and conversation and returns an AvailabilityStatus. spec ↗ script
quality-option-rejects-invalid-tier The quality option is the SpeechRecognitionQuality enum, so an invalid tier is rejected. spec ↗ script