UUID/GUID Generator
Generate cryptographically secure v4 UUIDs instantly in your browser.
About UUID v4 Algorithms
A UUID (Universally Unique Identifier) is a 128-bit label used for information in computer systems. Version 4 UUIDs are completely random and formatted as xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx. Unlike sequential integers (like ID 1, 2, 3), UUIDs can be generated independently without a central coordinator making them ideal for distributed databases and microservices.
Cryptographically Secure Randomness
This tool natively utilizes crypto.randomUUID() in modern browsers. This API taps directly into the operating system's Cryptographically Secure Pseudorandom Number Generator (CSPRNG), ensuring a highly unpredictable and secure entropy pool compared to standard Math.random().
Bulk UUID Generation
Unlike many online tools that only generate one UUID at a time, ByteBox allows you to instantly generate up to 100 RFC-compliant v4 UUIDs simultaneously and copy them as a newline-separated list.