JWT Decoder

JWT Decoder (JSON Web Tokens) is a tool to read encoded authentication tokens and inspect their inner data (header and payload).

• Split and Decode: A JWT consists of 3 parts (Header.Payload.Signature). This tool decodes them from Base64 and displays them as readable JSON.
• Data Inspection: Easily check claims such as user roles, expiration time (exp), and issued at time (iat).
• Safe & Local: Decoding happens entirely within the browser, ensuring your tokens remain secure (though production secrets shouldn't be verified here).

A must-have tool for debugging auth systems, API development, and frontend logins.