Security & API
JWT Decoder
Decode a JSON Web Token to inspect its header, payload, expiry, and standard claims.
About this tool
Use this JWT decoder to inspect the readable header and payload of a JSON Web Token. It identifies common claims such as the algorithm, issuer, audience, issued-at time, expiry, and not-before time so you can troubleshoot authentication flows more quickly.
Paste content, then choose an action.
Example
Paste a token in the form header.payload.signature. The decoder shows the data contained in the header and payload, plus a readable token-status summary. Decoding a JWT does not verify its signature or prove that it is trustworthy.