What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit label used to uniquely identify information. Standardised as RFC 4122, they're used in databases, APIs, and distributed systems to avoid ID collisions.
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Generator
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About UUIDs
v4 (Random)
UUID v4 generates a random identifier using a cryptographically secure random number generator. With 2¹²² possible values, the chance of a collision is astronomically low, making it ideal for most use cases.
Format
A UUID is 32 hexadecimal characters arranged in the pattern: 8-4-4-4-12 (e.g., 550e8400-e29b-41d4-a716-446655440000). The version and variant bits indicate the UUID type.