UUID Generator Blog

Everything you need to know about generating, validating, and using UUIDs across your stack.

UUID Basics: Versions and Variants

A quick guide to what UUIDs are, how v4 differs, and why variants matter.

Why UUID v4 Is a Great Default

Choosing v4 for simplicity and randomness; trade-offs vs time-ordered IDs.

Using UUIDs in APIs: Best Practices

Designing stable resource identifiers, avoiding leakage, and documenting formats.

UUIDs Across Formats: JSON and XML

Representing UUIDs consistently across different content types and schemas.

JWT jti with UUID: Token Uniqueness

Leverage UUIDs for the jti claim to prevent replay and track tokens.

Library Roundup: Generate UUIDs Everywhere

Quick recipes for JavaScript, Python, Java, and C# to generate and validate UUIDs.

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