JWT Debugger
A simple, client-side tool to decode and inspect JSON Web Tokens.
Encoded JWT
Decoded Header
Decoded Payload
About JWTs
JSON Web Tokens (JWT) are an open standard used to share security information between two parties — a client and a server. Each JWT contains encoded JSON objects, including a set of claims. JWTs are signed using a cryptographic algorithm to ensure that the claims cannot be altered after the token is issued. This tool decodes the Header and Payload sections of a JWT, which are Base64Url encoded, allowing you to easily inspect their contents for debugging purposes. Note that this tool does not verify the token's signature, as that requires the secret key.