UUID Generator
Generate random version 4 UUIDs, one at a time or in bulk. Runs entirely in your browser.
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Your UUIDs will appear here.
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About v4 UUIDs
A version 4 UUID is a 128-bit identifier built from random or pseudo-random bytes, with a few fixed bits marking its version and variant. The odds of two colliding are vanishingly small, which is why they're used as database keys, request IDs, and other unique identifiers.
Generation uses crypto.randomUUID(), the browser's built-in cryptographically secure random UUID function — no external library, and nothing leaves your device.