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.speechURI = 'http://www.example.com';



Specification Status Comment
Web Speech API
The definition of 'serviceURI' in that specification.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support33 webkit 1 ? No No No No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes webkit 1 Yes webkit 1 ? No No No ?

1. You'll need to serve your code through a web server for recognition to work.

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

Document Tags and Contributors

Contributors to this page: lucian95, jpmedley, chrisdavidmills
Last updated by: lucian95,