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// crypto.randomUUID()
UUID generator
Cryptographically random version-4 UUIDs — generate one or a whole batch at once.
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What a v4 UUID actually is
A UUID is a 128-bit identifier designed to be unique without any central coordination. Version 4 means it's generated from random bits (rather than derived from time or a network address) — the odds of two colliding are astronomically small, which is why they're the default choice for database keys, tracking IDs and file names.
Can two UUIDs from this tool collide?
In practice, no — a v4 UUID has 122 random bits. You'd need to generate billions of them per second for centuries before a collision became likely.
Is my data sent anywhere?
No — UUIDs are generated entirely in your browser using the Web Crypto API. Nothing is uploaded.
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