UUID Generator
Generate cryptographically random UUIDs (v4) on your device. Nothing is sent anywhere.
Frequently asked questions
What is a UUID?
A 128-bit identifier written as 32 hex digits (like 550e8400-e29b-41d4-a716-446655440000), commonly used as database keys and request IDs.
Are these UUIDs really random?
Yes. They are version 4 UUIDs generated with your browser's cryptographic random number generator (crypto.getRandomValues).
Can two UUIDs collide?
Practically never — with 122 random bits, you would need to generate billions per second for a century to expect one collision.