Decode and inspect JSON Web Tokens. View header, payload, and check expiration status. Built for developers and technical teams who need fast, accurate, repeatable workflows.
JSON Web Token (JWT) is a compact, URL-safe token format for securely transmitting information between parties. It consists of three parts: Header (algorithm and type), Payload (claims), and Signature (verification hash).
Common claims include: sub (subject/user ID), iss (issuer), aud (audience), exp (expiration time), iat (issued at). JWTs are widely used for authentication and authorization in web applications.
Paste a JWT token into the input field.
View the decoded header and payload.
Check expiration status and timestamps.
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