JWT Decoder
Paste a JSON Web Token to decode its header and payload. Decoding happens locally — your token is never transmitted.
Header
Payload
How to use the JWT Decoder
- Paste your JWT.
- Click Decode.
- Read the header and payload.
100% free, no sign-up, and it all runs in your browser — your data never leaves your device.
FAQ
Does this verify the signature?
No. It only decodes the readable header and payload. It does not validate the token’s signature.