How UUIDs are generated
The tool creates 128-bit version 4 UUIDs and sets the required version and variant bits. Random bytes come from the browser cryptographic API.
Where UUIDs are useful
UUIDs work well as entity identifiers, test-data keys, and correlation IDs. Accidental collisions are extremely unlikely, but a UUID is not a secret.
Local generation
Identifiers are created in the current tab and are not sent to the server or analytics.
Frequently asked questions
Which UUID version does this tool create?
Version 4. Its payload is random except for the required version and variant bits.
Can I use a UUID as a password?
It is not recommended. Use the password generator for controllable length and character sets.