UUID Generator

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit label used for information in computer systems. The term GUID (Globally Unique Identifier) is also widely used, typically in the Microsoft ecosystem.

The probability of duplicating a UUID is effectively zero. To put it in perspective, you would need to generate 1 billion UUIDs every second for the next 85 years to have a 50% chance of a single collision. This makes them perfect for identifying resources without a central authority.

Why use UUID Version 4?

There are several versions of UUIDs, but Version 4 is the most popular for general use.

• Randomness: UUID v4 is generated using random or pseudo-random numbers, ensuring high entropy.
• Privacy: Unlike v1 (which uses MAC addresses) or v3/v5 (which use namespace hashing), v4 does not reveal any information about the host computer or the generation time.
• Simplicity: It requires no input parameters, making it the fastest and easiest way to generate a unique ID.

Common Use Cases

Developers use our bulk UUID generator for:

• Database Primary Keys: Using UUIDs allows you to merge records from different databases without conflict (unlike auto-incrementing integers).
• Session IDs: Securely identifying user sessions in web applications.
• API Keys & Tokens: Generating unique access tokens for users or services.
• Testing Data: Populating mock databases with unique identifiers during development.