🎫 JWT Decoder
Decode and inspect JSON Web Token (JWT) header and payload without verification.
Paste a JWT token to see decoded header and payload
JWT Decoder
Decode any JWT token to inspect its header, payload claims, and signature. Timestamp values are automatically converted to readable dates.
Frequently Asked Questions
What is a JWT?
A JSON Web Token is a compact, URL-safe token with three parts: header, payload, and signature, separated by dots.
Is my token verified?
No, this tool only decodes the header and payload. It does not verify the signature. For security testing, use a proper JWT library.
What information can I see?
The decoded header shows the algorithm and token type. The payload shows claims like subject, issuer, expiration, and custom data.