UUID Generator
Mint version 4 UUIDs for database keys, filenames or anything else that needs a name nobody will ever collide with. One click, or five hundred at once.
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Output
How it works
A version 4 UUID is 122 random bits with a few fixed marker bits (the "4" you see in the middle, and a variant tag), written as 32 hexadecimal digits. With that many possibilities, two independently generated UUIDs colliding is so unlikely that systems happily use them as unique IDs without any central registry. This page uses your browser's built-in crypto.randomUUID() — a proper cryptographic random source — with a manual fallback built on the same secure generator for older browsers.
The limitation: random is not the same as secret. A UUID is guessable in the same sense that any random string is — 122 bits is plenty — but it carries no proof of who made it and shouldn't be treated as an access token on its own. Use it to name things, not to protect them.