UUID Generator
Generate cryptographically random version 4 UUIDs, one or many at a time, and copy them with a click. The values come from your browser secure random source, so they are never generated on a server or logged anywhere.
UUIDs will appear here.Frequently asked questions
What is a version 4 UUID?+
A version 4 UUID is a 128-bit identifier whose bits are mostly random. It is the most common UUID type because it needs no central coordination and has an extremely low collision chance.
Are these UUIDs safe to use as database keys?+
Yes. Version 4 UUIDs are generated from a secure random source and are suitable as primary keys, request IDs, and file names. The chance of two colliding is negligible in practice.
Are the UUIDs generated on a server?+
No. They are produced locally using the browser crypto API. Nothing is requested from or sent to a server, so the values stay private to your device.