JWT Decoder

JWT decoder helps you decode JSON Web Tokens to view their header, payload, and signature instantly. This free online tool is useful for developers working with authentication, authorization, and APIs. Paste your JWT to inspect its contents in a readable JSON format without verifying or modifying the token.

Encoded Token
Header
Payload

What is a JWT decoder?

A JWT decoder decodes JSON Web Tokens to display their header and payload in readable JSON format, helping developers debug and inspect JWT contents.

How does a JWT decoder work?

This JWT decoder allows you to decode JSON Web Tokens and inspect their encoded data without validating the signature. It separates the token into header, payload, and signature sections and displays the decoded JSON clearly.
JWTs are commonly used for authentication and authorization, but debugging them manually can be difficult. This tool simplifies the process by decoding tokens instantly and highlighting important claims such as issuer, expiration, and audience.
This tool is intended for development and testing purposes only. Secrets are processed locally and never stored.
All decoding runs entirely in your browser for fast performance and improved privacy. No tokens are sent to a server or stored.

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