uuid.gripe

Make, decode and check UUIDs. Everything is generated and read right here in your browser; nothing is sent anywhere.

Version

How many

Format

Case

Wrap

Hyphens

Space makes new ones · click one to copy

Everything runs in your browser: UUIDs are generated locally with crypto.getRandomValues, and nothing you make or paste is sent anywhere.
v1 and v6 use a random node ID (multicast bit set), never your network card's MAC address. Only your settings are remembered.

uuid.gripe

Details

Check a name (the name can't be read back out, but a guess can be checked)

Every format (click to copy)

UUIDs (one per line, any format)