🪪JWT Decoder
Decode a JWT's header & payload.
About JWT Decoder
Decode a JSON Web Token (JWT) to inspect its header and payload. Decoding happens entirely in your browser — nothing is sent anywhere and the signature is not verified. Free online JWT decoder for developers.
🔒 Private by design — this tool runs entirely in your browser. Nothing you enter is uploaded to a server.
Frequently asked questions
Is it safe to paste a JWT here?＋
Decoding runs entirely in your browser and nothing is uploaded. Still, never paste production tokens/secrets into any online tool. The signature is not verified.