What kind of UUID does this generate?

Version-4 (random) UUIDs, generated with your browser's cryptographically secure random number generator.

Are the UUIDs unique?

UUID v4 has 122 random bits, making collisions astronomically unlikely — safe for practical use as unique identifiers.

No. UUIDs are generated entirely in your browser; nothing is transmitted or stored.

Generate cryptographically-random UUID v4 (GUID) identifiers — single or bulk.

How many

Uppercase

No hyphens

Result