This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The serviceURI property of the SpeechRecognition interface specifies the location of the speech recognition service used by the current SpeechRecognition to handle the actual recognition. The default is the user agent's default speech service.


var myServiceURI = mySpeechRecognition.serviceURI;
mySpeechRecognition.serviceURI = 'path/to/my/service/';


A DOMString representing the URI of the speech recognition service.


var recognition = new SpeechRecognition();

recognition.serviceURI = 'http://www.example.com';


Browser compatibility

BCD tables only load in the browser

Firefox OS permissions

To use speech recognition in an app, you need to specify the following permissions in your manifest:

"permissions": {
  "audio-capture" : {
    "description" : "Audio capture"
  "speech-recognition" : {
    "description" : "Speech recognition"

You also need a privileged app, so you need to include this as well:

  "type": "privileged"

See also