Headers: Permissions-Policy.on-device-speech-recognition
Permissions-Policy: on-device-speech-recognition directive
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The HTTP Permissions-Policy header on-device-speech-recognition directive controls access to the on-device speech recognition functionality of the Web Speech API.
Specifically, where a defined policy blocks usage, any attempts to call the API's SpeechRecognition.available() or SpeechRecognition.install() methods will fail.
Syntax
Permissions-Policy: on-device-speech-recognition=<allowlist>;
<allowlist>-
A list of origins for which permission is granted to use the feature. See
Permissions-Policy> Syntax for more details.
Default policy
The default allowlist for on-device-speech-recognition is self.
Specifications
| Specification |
|---|
| Web Speech API> # dom-speechrecognition-available> |
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
on-device-speech-recognition |
142 | 142 | No | 126 | No | No | No | No | No | No | No | No |
See also
© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/on-device-speech-recognition
