UUID Generator

A UUID/GUID Generator is a developer utility designed to generate bulk, unique identifiers for databases, API records, and software applications. The tool supports standard random Version 4 UUIDs and modern time-ordered Version 7 UUIDs, which improve indexing performance in databases like PostgreSQL or MySQL. Generating identifiers locally is essential for protecting the integrity of your schemas. Our engine uses the browser's secure crypto.getRandomValues() API instead of insecure Math.random(), ensuring high cryptographic quality and zero collision risk. It operates completely in-browser to keep your database keys safe from interception. Furthermore, the output can be customized, formatted, and downloaded directly as a structured file layout with custom settings. This streamlines development pipelines, seeding processes, and UI mocking tasks without any database setup. For more details, explore our blog articles: Why Offline-First Developer Tools Matter and The Hidden Risks of Online Developer Tools.

Below is a structural comparison between UUID versions:

UUID Version	Generation Base	Sortability	DB Index Performance
v4 (Random)	122 bits of randomness	Non-sortable	Poor on large datasets
v7 (Time-Ordered)	Unix timestamp + randomness	Chronologically sortable	Excellent (Fast B-tree insert)

Generate 100 UUIDs instantly: 550e8400-e29b-41d4-a716-446655440000

Unlike many online generators that use basic Math.random(), our engine uses the browser's crypto.getRandomValues() API. This ensures that the generated IDs meet rigorous cryptographic standards for randomness and are practically guaranteed to be unique.

Generating primary keys for a private database? Our engine runs 100% in your browser. No IDs are generated on a server, preventing any risk of "ID sniffing" or tracking of your application's internal structure.