Decode JWT Token

Decode JSON Web Tokens to view header and payload claims.

JWT Token

Header

Result will appear here...

Payload

Result will appear here...

The Methodology

Split by '.' → Base64URL Decode → JSON.parse

This tool uses the verified professional formula shown above. We cite our sources so you can trust every result.

How it works

JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object.

This tool decodes the token's three parts (Header, Payload, Signature) using Base64URL decoding. Note that this tool does not verify the signature, it only decodes the data for viewing.