Bulk UUID / GUID Generator

Complete Guide to UUIDs and GUIDs

A UUID (Universally Unique Identifier), also known as a GUID (Globally Unique Identifier) in Microsoft environments, is a 128-bit label used to uniquely identify information in computer systems. Because the probability of a duplicate is infinitesimally close to zero, systems can generate IDs locally without needing a central coordinator database. This online utility makes it easy to generate bulk ID lists for databases, APIs, and seeding scripts.

Difference Between UUID Versions

This generator supports two major variants depending on your operational parameters:

• Version 4 (Random): Generated using cryptographically strong random values. This is the most common version for databases, primary keys, and session tokens because it reveals no details about the host hardware or timestamps.
• Version 1 (Time-based): Constructed from the system time clock and the host's physical network address (MAC). This is useful when IDs must be ordered sequentially based on creation time.

Zero Tracking Privacy Guarantee

Unique IDs are frequently used to trace sessions, records, or secure transactions. Because this tool runs entirely locally in your browser using window.crypto.getRandomValues, no identifiers are transmitted over the internet or logged on servers, maintaining complete privacy.