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Crypto: randomUUID() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨March 2022⁩.

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 randomUUID() method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.

Syntax

randomUUID()

Parameters

None.

Return value

A string containing a randomly generated, 36 character long v4 UUID.

Examples

/* Assuming that self.crypto.randomUUID() is available */

let uuid = self.crypto.randomUUID();
console.log(uuid); // for example "36b8f84d-df4e-4d49-b662-bcde71a8764f"

Specifications

Specification
Web Cryptography Level 2> # Crypto-method-randomUUID>

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
`randomUUID`	92	92	95	78	15.4	92	95	65	15.4	16.0	92	15.4