What is JWT.io?
JWT.io is a straightforward, web-based tool designed to help you work with JSON Web Tokens (JWTs). You can paste a JWT into it, and it will decode and display the payload, header, and signature for you to inspect.
What Makes JWT.io Stand Out
- Simplicity: It's incredibly easy to use. Just paste your token, and you get your information.
- Clarity: It clearly separates the different parts of the JWT (header, payload, signature) making it easy to understand what's inside.
- Verification: You can verify the signature of a JWT if you have the secret key, which is essential for checking if a token has been tampered with.
Who Should Use JWT.io?
Developers working with authentication and authorization systems that utilize JWTs will find this tool particularly useful. It's great for debugging issues with token generation or validation and for understanding how JWTs are structured.
Is JWT.io Free?
Yes, JWT.io is completely free to use. It's a public utility offered by the community to aid in JWT development and debugging.