JWT Generator

Generate and sign JSON Web Tokens securely.

JWT Generator

Sign a JWT with a secret using HS256 or HS512. Everything happens locally.

Header (JSON)

Payload (JSON)

Secret

What is JWT Generator?

A JWT Generator is an essential tool for testing authentication flows. It allows you to create tokens with custom claims, headers, and secret keys. Our tool supports standard HMAC algorithms (HS256, HS512) and performs all signing locally, ensuring your secrets never leave your browser.

When to use JWT Generator?

Testing backend authentication middleware

Generating mock tokens for frontend development

Verifying JWT signature implementation in your code

Exploring the structure of signed JSON Web Tokens

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