Question 1

What's the difference between UUID and GUID?

Accepted Answer

GUID is Microsoft's implementation of UUID — they're effectively the same 128-bit value.

Question 2

Can two UUIDs ever collide?

Accepted Answer

The probability of a UUID v4 collision is negligible enough to ignore in practice.

Question 3

Are these UUIDs cryptographically random?

Accepted Answer

Yes, they're generated using the Web Crypto API's secure random number generator.

Question 4

Can I generate multiple UUIDs at once?

Accepted Answer

Yes, set the count and generate a whole batch in a single click.

Question 5

Are UUIDs sent to a server?

Accepted Answer

No, every UUID is generated locally in your browser.

UUID Generator

How to use it