1. Web
  2. Web APIs
  3. USB

USB

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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.

Note: This feature is available in Web Workers.

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.

EventTarget USB

Instance properties

None.

Instance methods

USB.getDevices()

Returns a Promise that resolves with an array of USBDevice objects for paired attached devices.

USB.requestDevice()

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.

Events

connect

Fired whenever a previously paired device is connected.

disconnect

Fired whenever a paired device is disconnected.

Specifications

Specification
WebUSB API
# usb

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
USB
Experimental
Chrome – Full support
Chrome 61 (Release date: 2017-09-05)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 48 (Release date: 2017-09-27)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 61 (Release date: 2017-09-05)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 45 (Release date: 2018-02-15)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 8 (Release date: 2018-07-18)
footnote Full support
WebView Android – No support
WebView Android
footnote
footnote WebView exposes this interface, but does not support WebUSB. See bug 41441927.
WebView on iOS – No support
WebView on iOS
footnote No support
connect event
Experimental
Chrome – Full support
Chrome 61 (Release date: 2017-09-05)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 48 (Release date: 2017-09-27)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 61 (Release date: 2017-09-05)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 45 (Release date: 2018-02-15)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 8 (Release date: 2018-07-18)
footnote Full support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
disconnect event
Experimental
Chrome – Full support
Chrome 61 (Release date: 2017-09-05)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 48 (Release date: 2017-09-27)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 61 (Release date: 2017-09-05)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 45 (Release date: 2018-02-15)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 8 (Release date: 2018-07-18)
footnote Full support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
getDevices
Experimental
Chrome – Full support
Chrome 61 (Release date: 2017-09-05)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 48 (Release date: 2017-09-27)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 61 (Release date: 2017-09-05)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 45 (Release date: 2018-02-15)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 8 (Release date: 2018-07-18)
footnote Full support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
requestDevice
Experimental
Chrome – Full support
Chrome 61 (Release date: 2017-09-05)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 48 (Release date: 2017-09-27)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 61 (Release date: 2017-09-05)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 45 (Release date: 2018-02-15)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 8 (Release date: 2018-07-18)
footnote Full support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Available in workers
Experimental
Chrome – Partial support
Chrome 70 – 117 (Release date: 2018-10-16)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Chrome – Partial support
Chrome 118 (Release date: 2023-10-10)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
Edge – Partial support
Edge 79 – 117 (Release date: 2020-01-15)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Edge – Partial support
Edge 118 (Release date: 2023-10-13)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
Firefox – No support
Firefox
footnote No support
Opera – Partial support
Opera 57 – 103 (Release date: 2018-11-28)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Opera – Partial support
Opera 104 (Release date: 2023-10-23)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
Safari – No support
Safari
footnote No support
Chrome Android – Partial support
Chrome Android 70 – 117 (Release date: 2018-10-17)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Chrome Android – Partial support
Chrome Android 118 (Release date: 2023-10-10)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Partial support
Opera Android 49 – 78 (Release date: 2018-12-07)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Opera Android – Partial support
Opera Android 79 (Release date: 2023-12-06)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Partial support
Samsung Internet 10 – 24 (Release date: 2019-08-22)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Samsung Internet – Partial support
Samsung Internet 25 (Release date: 2024-04-24)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
WebView Android – No support
WebView Android
footnote
footnote WebView exposes this interface, but does not support WebUSB.
footnote See bug 41441927
WebView on iOS – No support
WebView on iOS
footnote No support

Tip: you can click/tap on a cell for more information.

Full support
Partial support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.
Has more compatibility info.

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