Developer Tools
JWT Decoder
Decode and inspect JWT (JSON Web Token) contents. View header, payload, and check expiration status.
What is JWT?
JWT (JSON Web Token) is a compact, URL-safe means of representing claims between two parties. It consists of three parts: Header, Payload, and Signature, separated by dots.
FAQ
Does this verify the JWT signature?
No, this tool only decodes and displays the JWT contents. It does not verify signatures as that requires the secret key.
Is it safe to paste JWTs here?
Yes, all decoding happens in your browser. No tokens are sent to any server. However, never share production tokens publicly.
What claims are commonly in JWTs?
Common claims include: sub (subject), exp (expiration), iat (issued at), iss (issuer), and aud (audience).