Security Tool

JWT Inspector

Decode a JSON Web Token and inspect its header, payload and basic timing information.

This tool decodes JWT content in your browser. It does not verify the signature. Do not paste real production secrets or sensitive personal data into public tools.

Paste JWT token

Header

Paste and decode a JWT to see the header.

Payload

Paste and decode a JWT to see the payload.

Token Info

Basic token information will appear here.

What does this tool show?

Header

Usually shows the token type and signing algorithm, for example RS256.

Payload

Contains claims such as user ID, audience, issuer, roles, scopes and expiry time.

Signature

This page does not verify the signature. It only decodes the readable parts of the token.