Util / Generators
/UUID Generator
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About UUID generation
v4 UUIDs are generated using crypto.randomUUID() — the browser's cryptographically secure random number generator — so they are suitable for use as database primary keys, idempotency tokens, or any context requiring globally unique identifiers. v7 UUIDs embed a millisecond-precision Unix timestamp in the first 48 bits, making them monotonically increasing and index-friendly in time-ordered databases.
FAQ
Are these UUIDs truly random?
v4 UUIDs use crypto.randomUUID() which is backed by the OS CSPRNG — the same source used for TLS key generation.
Is anything sent to a server?
No. All generation happens in your browser. The UUIDs never leave this tab.