JWT Decoder
Decode and inspect JSON Web Tokens. View header, payload, and expiration status.
Header
Payload
Signature
About this tool
Decode and inspect JSON Web Tokens instantly. Color-coded header, payload, and signature. Check token expiration, issuer, subject, and claims. Free, private, browser-based.
Frequently asked questions
What is a JWT decoder?
A JWT decoder reads a JSON Web Token and displays its header, payload claims, and signature in a human-readable format without needing the secret key.
Is it safe to paste my JWT here?
Yes. Your token is processed entirely in your browser. Nothing is sent to any server.
Can this verify a JWT signature?
No. Signature verification requires the secret or public key. This tool decodes and inspects only.