Question 1

What is a UUID?

Accepted Answer

A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across space and time. UUID v4 uses random numbers for generation.

Question 2

What is UUID v4?

Accepted Answer

UUID v4 is a version that uses random or pseudo-random numbers. It has the format xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where y is 8, 9, a, or b.

Question 3

Are these UUIDs cryptographically secure?

Accepted Answer

Yes. This tool uses crypto.getRandomValues() which provides cryptographically strong random values.

Question 4

Can I generate multiple UUIDs at once?

Accepted Answer

Yes. You can generate up to 100 UUIDs at once using the bulk generation feature.

Question 5

Is my data sent to a server?

Accepted Answer

No. All UUID generation happens locally in your browser. Nothing is sent to any server.

Question 6

What is the difference between UUID and GUID?

Accepted Answer

UUID and GUID (Globally Unique Identifier) are essentially the same thing. GUID is the term used by Microsoft, while UUID is the standard term.

UUID Generator

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