UUID v4 is a randomly generated 128-bit identifier. It is practically guaranteed to be unique across space and time, making it ideal for database primary keys and session tokens.

Are these UUIDs truly random?

Yes. They are generated using the browser's crypto.getRandomValues() API, which is cryptographically secure.

UUID Generator

Browser-based

Generate one or many UUID v4 random identifiers instantly. Copy individual UUIDs or copy all at once.

Processed 100% in your browser â€” your file never leaves this device.

How we prove it

Free forever
No signup
Works offline
Ad-free

About UUID Generator

Create unique identifiers for database keys, test data or session tokens. Generate between 1 and 100 cryptographically secure UUID v4 values at once, then copy them individually or all together. Generation uses the browser’s native crypto API and never leaves your device.

How to use

1
Select how many UUIDs you want to generate.
2
Click "Generate".
3
Copy individual UUIDs, or click "Copy" to copy them all at once.

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