UUID Generator
Cryptographically secure random UUIDs (v4), generated by your browser's crypto API. Up to 500 at a time, with uppercase and no-hyphen variants.
FAQ
Are these UUIDs truly random?
Yes — they come from crypto.randomUUID(), your browser's CSPRNG. No server, no seed, no log of what was generated.
What is UUID v4?
A 128-bit identifier with 122 random bits — the odds of a collision are astronomically low (generate a billion per second for ~85 years for a 50% chance of one duplicate).
When would I remove the hyphens?
Some databases and systems store UUIDs as plain 32-char hex strings. The value is identical either way — hyphens are just formatting.