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Coverage / speech-api

Web Speech API

Specification: webaudio.github.io/web-speech-api/. 14 interfaces defined here, 77 members exposed on Window (Web IDL). Group: Media and devices.

Existence only: “present” means the name is defined where Web IDL puts it, not that it behaves as the standard says. The featured checks test behavior.

Share present per engine
EngineMembers presentInterfaces present
warpdom0.1.6maintainer's engine0% (0 of 77)0 of 14
happy-dom21.0.30% (0 of 77)0 of 14
jsdom30.1.30% (0 of 77)0 of 14
linkedom0.18.130% (0 of 77)0 of 14
15 of 15 interfaces
SpeechGrammar2 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechGrammarList4 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechRecognition24 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechRecognitionAlternative2 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechRecognitionErrorEvent2 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechRecognitionEvent2 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechRecognitionPhrase2 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechRecognitionResult3 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechRecognitionResultList2 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechSynthesis9 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechSynthesisErrorEvent1 memberwarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechSynthesisEvent5 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechSynthesisUtterance13 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
SpeechSynthesisVoice5 memberswarpdom: Missinghappy-dom: Missingjsdom: Missinglinkedom: Missing
Window1 member added to Window (defined in HTML)warpdom: 0/1happy-dom: 0/1jsdom: 0/1linkedom: 0/1

Probed 2026-10-19. Data: idl.json (CC BY 4.0).