JWT Decoder

Decode JSON Web Token header and payload and inspect claims (no verification).

How it works

Paste a JWT to inspect its header and payload as readable JSON, including common claims like exp and sub. This tool decodes only — it does not verify the signature.

Example: a header.payload.signature token is split and decoded into readable JSON claims.

Encoded token

Header

Payload

Decoding only. This tool does not verify the signature, so never trust an unverified token in production.