JWT Parser
Decode and inspect JSON Web Tokens.
How to Use the Free Online JWT Parser
Copy your full JWT (JSON Web Token) and paste it into the 'JWT Token' text area.
The tool will automatically decode the token as you type.
The decoded Header, Payload, and Signature of the token will be displayed in their respective boxes, nicely formatted for readability.
This is a free online tool that works entirely in your browser. Your sensitive tokens are never sent to our servers.
Frequently Asked Questions
What is a JWT?
A JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. The claims are encoded as a JSON object that is used as the payload of a JSON Web Signature (JWS) structure or as the plaintext of a JSON Web Encryption (JWE) structure, enabling the claims to be digitally signed or integrity protected.
Does this tool validate the JWT signature?
No, this online JWT parser only decodes the token to display its contents. It does not validate the signature against a secret key. Signature validation must be done on your server with your private key to ensure the token has not been tampered with.
Is it safe to paste my JWTs here?
Yes. This tool is a client-side application, meaning all the decoding happens within your browser. No data, including your JWT, is ever transmitted to our servers. However, as a best practice, you should always be cautious with production tokens that contain sensitive user information.