JWT

JWT Decoder & Verifier

Decode JWT headers and payloads, inspect expiration, and verify HS, RS, and ES signatures locally.

Token

Verification key (optional): enter a shared secret for HS, or a public key (PEM or JWK) for RS / ES.

About JWT Decoder & Verifier

Decode JWT headers and payloads, inspect expiration, and verify HS, RS, and ES signatures locally. Processing happens locally in your browser, and the tool does not upload the entered content.

Privacy and compatibility

Results depend on browser capabilities and the supplied input. Review generated output before using it in production or formal documents.