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UUID Generator
Generates RFC 4122 version 4 (random) UUIDs using crypto.randomUUID(). Generate one or a batch.
FAQ
What's a UUID v4?
A 128-bit identifier that's randomly generated (not derived from timestamp or hardware), formatted as 32 hex digits in 5 groups — the most common UUID version for general-purpose unique IDs.
A 128-bit identifier that's randomly generated (not derived from timestamp or hardware), formatted as 32 hex digits in 5 groups — the most common UUID version for general-purpose unique IDs.
How random are these, really?
Generated via
Generated via
crypto.randomUUID(), which uses your browser's cryptographically secure random number generator, not Math.random().Are these sent anywhere?
No — generated and displayed entirely in your browser.
No — generated and displayed entirely in your browser.