Generate random UUID v4 values instantly — cryptographically random, right in your browser.
UUID v4 — 122 random bits. Collisions are astronomically unlikely.
What is a UUID generator? A UUID generator creates random universally unique identifiers — this one produces version 4 UUIDs, in batches if you like.
A UUID (universally unique identifier) is a 128-bit value used to label data uniquely. Version 4 is generated from random numbers, with 122 of the bits random and a few fixed to mark the version and variant.
They are created in your browser using the built-in crypto.randomUUID function (or a cryptographically random fallback), so the values are generated locally and never sent anywhere.
In theory yes, but with 122 random bits the odds are astronomically small. For practical purposes you can treat each generated UUID v4 as unique.