UUID Generator
Generate cryptographically random version-4 UUIDs. Free, instant, and fully private.
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit value used to uniquely label information without a central authority. A version-4 UUID is generated from random numbers, so the chance of two colliding is astronomically small — you can safely generate them independently on any machine.
They're commonly used as database primary keys, API request IDs, file names, and distributed-system identifiers. This generator uses your browser's secure random source (crypto.getRandomValues), so the values are suitable for production use.