Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The USB interface of the WebUSB API provides attributes and methods for finding and connecting USB devices from a web page.
Use navigator.usb to get access to the USB object.
The USB interface inherits from EventTarget.
None.
USB.getDevices() Experimental
Returns a Promise that resolves with an array of USBDevice objects for paired attached devices.
USB.requestDevice() Experimental
Returns a Promise that resolves with an instance of USBDevice if the specified device is found. Calling this function triggers the user agent's pairing flow.
connect Experimental
Fired whenever a previously paired device is connected.
disconnect Experimental
Fired whenever a paired device is disconnected.
| Specification |
|---|
| WebUSB API # usb |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
USB |
61 | 79 | No | No | 48 | No |
NoWebView exposes this interface, but does not support WebUSB. See Chromium bug 933055. |
61 | No | 45 | No | 8.0 |
connect_event |
61 | 79 | No | No | 48 | No | No | 61 | No | 45 | No | 8.0 |
disconnect_event |
61 | 79 | No | No | 48 | No | No | 61 | No | 45 | No | 8.0 |
getDevices |
61 | 79 | No | No | 48 | No | No | 61 | No | 45 | No | 8.0 |
requestDevice |
61 | 79 | No | No | 48 | No | No | 61 | No | 45 | No | 8.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/USB