What is a UUID v4?
A Universally Unique Identifier (UUID) version 4 is a standardized 128-bit format for generating random unique IDs. Unlike versions 1 or 2, v4 relies entirely on high-quality randomness (cryptographically strong), making it the preferred choice for modern web apps, microservices, and database keys.
Why use our GUID tool?
Our generator works client-side, ensuring your IDs never touch a server. Whether you need a single ID or a bulk list for testing, you can toggle hyphens and copy results instantly. It's mobile-friendly, lightweight, and built for developers who value speed.