I assume you are referring to the SpeechRecognition interface of the Web Speech API. Unfortunately this is not supported by Firefox and even for Chrome it doesn

I assume you are referring to the SpeechRecognition interface of the Web Speech API. Unfortunately this is not supported by Firefox and even for Chrome it doesn't work offline. Source: https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognition https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecog...