UUID Generator
Generate RFC-4122 v4 UUIDs using your browser’s secure random source. Copy one or the whole batch.
Frequently asked questions
What is a UUID?
A Universally Unique Identifier — a 128-bit value used to label things without a central registry. Version 4 uses random bits, so collisions are astronomically unlikely.
Are these UUIDs truly random?
Yes. They are generated with the browser’s Web Crypto API (crypto.getRandomValues), which is seeded from a secure source.
Is anything uploaded?
No. Generation happens entirely in your browser.