Generate a UUID
Pick how many, then copy the list. New replaces the list.
UUIDOn this device
Each identifier is a version-4 UUID from the browser’s cryptographic random source. The page does not check a database, and it does not promise the value is unused anywhere else. Collision odds for version 4 are the usual astronomical ones.
How to use it
- Choose 1, 5, 10, or 25.
- Press New if you want another set.
- Copy or download the list.
Good to know
- Clearing the page makes a fresh one rather than leaving the box empty.
- These are not version 1 and they contain no timestamp or MAC address.
- Nothing is stored.
Questions
Can I get version 7?
No. This page makes version 4 only, so the format stays obvious.
Are they unique?
They are random. This site does not look them up and does not keep them.