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Speech recognition grammar

This feature is discouraged — Advancements in speech recognition mean that speech grammars are not needed to achieve low error rates.

For more information, see: WebAudio/web-speech-api/pull/117 (GitHub)

The SpeechRecognition.grammars property of the Web Speech API represents a set of words or patterns of words that the recognition service should recognize, used for when the recognition service's accuracy is low.

Browser support

  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox Not supported
  • Firefox for Android Not supported
  • Safari Not supported
  • Safari on iOS Not supported