Paste your JWT token below to decode and inspect its header, payload, and expiration status.
Paste your complete JWT token into the input field above. The tool will automatically decode and display the header and payload in a formatted JSON view. It also checks the token's expiration status if an "exp" claim is present. You can copy individual sections using the copy buttons.
A JWT consists of three parts separated by dots: the header (specifying the algorithm and token type), the payload (containing claims like issuer, subject, expiration, and custom data), and the signature (used to verify the token's integrity). Each part is Base64URL-encoded.