Free tool
UUID Generator
Generate version-4 UUIDs in the browser for IDs, test data, and tokens you do not need a server to mint.
IDs without a database trip
Generate one or several UUIDs for fixtures, API tests, or a form that needs a client-side key. Do not treat a UUID as a secret on its own.
FAQ
Is this UUID version 4?
Yes, random v4 identifiers via crypto.getRandomValues. They are not sequential and are not a proof of uniqueness across the whole internet — just extremely unlikely to collide in ordinary use.