JWT Decoder / Generator

Generate JWT

Decode JWT

What is a JWT Decoder / Generator?

A JWT (JSON Web Token) Decoder / Generator is a tool that allows you to create secure tokens for authentication and inspect existing tokens. JWTs are widely used in web applications for stateless authentication, API authorization, and secure data exchange. This tool makes working with JWTs fast and safe directly in your browser.

How It Works

Enter a payload and secret key to generate a JWT, or paste an existing token to decode it. Choose the hashing algorithm (HS256, HS384, HS512) for encoding. The server handles token creation and verification securely via PHP AJAX, and the result is returned instantly.

Benefits

Quickly generate and decode JWTs for testing or development. Debug authentication flows, inspect payloads safely, and ensure tokens are created securely. Browser-based, fast, reliable, and eliminates human error when working with JWTs in web applications.

Any copying, distribution, or use of the materials from this service without authorization is strictly prohibited. Violations will be prosecuted under applicable law and may result in both civil and criminal liability.