π UUID Generator
Generates standard v4 UUIDs with crypto.randomUUID() β in bulk, with formatting options.
FAQ
Can UUIDs repeat?
v4 uses 122 bits of randomness, so the collision probability is about 2^-122 β for practical purposes, it never repeats. It's good enough for database primary keys and idempotency keys.
When should I use the no-hyphen format?
The 32-character hyphen-free format is often used for tokens, filenames, and short-link keys β it takes up less space.