UUID v4 Generator

Example:

550e8400-e29b-41d4-a716-446655440000
9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d

JavaScript:
crypto.randomUUID()

Generate cryptographically random UUID v4 identifiers. Perfect for database primary keys, API keys, and unique identifiers.

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FAQs

What is UUID v4?

Random 128-bit identifier with format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where 4 indicates version 4.

Are UUIDs truly unique?

Collision probability is extremely low (2^-128). Safe to assume uniqueness.