Decode, inspect, and generate JSON Web Tokens (JWT) instantly. This tool helps you analyze JWT structure, verify signatures, and create your own tokens securely and directly in your browser — without ever sending data to a server.
JSON Web Tokens are widely used for authentication, authorization, and secure API communications. With this tool, you can explore and debug tokens, inspect their contents, and test your own securely signed JWTs — all in real time.
Everything runs locally: your tokens, secrets, and sensitive information stay right in your browser. No network requests are made, and no token data is ever transmitted. This ensures a completely private and secure environment for working with JWTs.
Whether you're integrating OAuth, building a backend, or learning how JWTs work under the hood, this tool provides a fast, interactive way to experiment with real tokens without compromising security. Perfect for debugging, prototyping, or verifying your implementation.
The entire application is built to respect your privacy. Since it works entirely on the client side, your JWTs, keys, and secrets are never stored or shared. This is especially important when working with production or private data.
Explore JWTs with confidence. This decoder & encoder gives you full control, complete transparency, and unmatched privacy — right from your browser.
Note: Always handle your secrets with care. This tool keeps them local and safe.