Question 1

What is a JWT?

Accepted Answer

A JSON Web Token (JWT) is a compact, URL-safe token format used for securely transmitting information between parties. It consists of three parts: Header, Payload, and Signature.

Question 2

Is it safe to paste my JWT here?

Accepted Answer

Yes! All decoding happens locally in your browser. Your token never leaves your device or gets sent to any server.

Question 3

Can this tool verify JWT signatures?

Accepted Answer

This tool decodes and displays JWT contents. Signature verification requires the secret key or public key, which should never be shared in a web tool.

Question 4

What does an expired JWT mean?

Accepted Answer

If the "exp" (expiration) claim is in the past, the token has expired and should no longer be accepted by servers.

Question 5

What are common JWT claims?

Accepted Answer

Common claims include: iss (issuer), sub (subject), aud (audience), exp (expiration), nbf (not before), iat (issued at), and jti (JWT ID).

JWT Decoder

Frequently Asked Questions

Related Tools

AI Email Writer

JSON Formatter

PDF Tools