UUID Generator
Generate cryptographically-random version-4 UUIDs (also called GUIDs). Create as many as you need at once and copy them all in one click.
Runs in your browser — your files never leave your device
How to use UUID Generator
- 1Set how many UUIDs you want.
- 2Toggle hyphens and letter case to match your needs.
- 3Click Generate, then Copy all.
Frequently asked questions
How random are these UUIDs?
They use your browser's cryptographic random source (crypto.randomUUID), the same secure generator used for tokens.
What is a version-4 UUID?
A 128-bit identifier where most bits are random, giving an astronomically low chance of collisions.
Are the UUIDs generated on a server?
No — they're generated locally in your browser and never leave your device.