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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

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 33 [1] 44 (44) [2] No support No support No support
Removed 49 ? ? ? ?
Feature Android Webview Chrome forAndroid Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support ? (Yes)[1] ? 2.5 No support No support No support
Removed 49 ? ? ? ? ? ?
  • [1] Speech recognition interfaces are currently prefixed on Chrome, so you'll need to prefix interface names appropriately, e.g. webkitSpeechRecognition; You'll also need to serve your code through a web server for recognition to work.
  • [2] Can be enabled via the media.webspeech.recognition.enable flag in about:config, although note that currently speech recognition won't work on Desktop Firefox — it will be properly exposed soon, once the required internal permissions are sorted out.

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

Étiquettes et contributeurs liés au document

 Contributeurs à cette page : jpmedley, chrisdavidmills
 Dernière mise à jour par : jpmedley,