The BluetoothUUID interface of the Web Bluetooth API provides a way to look up Universally Unique Identifier (UUID) values by name in the registry maintained by the Bluetooth SIG.

A UUID string is a 128-bit UUID, for example 00001818-0000-1000-8000-00805f9b34fb. The Bluetooth registry contains lists of descriptors, services, and characteristics identified by these UUIDs in addition to a 16- or 32- bit alias, and a name.

The BluetoothUUID interface provides methods to retrieve these 128-bit UUIDs.

BluetoothUUID.canonicalUUID() Experimental

Returns the 128-bit UUID when passed the 16- or 32-bit UUID alias.

BluetoothUUID.getCharacteristic() Experimental

Returns the 128-bit UUID representing a registered characteristic when passed a name or the 16- or 32-bit UUID alias.

BluetoothUUID.getDescriptor() Experimental

Returns a UUID representing a registered descriptor when passed a name or the 16- or 32-bit UUID alias.

BluetoothUUID.getService() Experimental

Returns a UUID representing a registered service when passed a name or the 16- or 32-bit UUID alias.

In the following example the UUID representing the service named device_information is returned and printed to the console.

let result = BluetoothUUID.getService("device_information");
console.log(result); // "0000180a-0000-1000-8000-00805f9b34fb"