JWT Decoder
What is a JWT?
JSON Web Tokens are an open, industry standard RFC 7519 method for securely representing claims between two parties. This tool decodes the Base64Url encoded header and payload parts.
How to use
1
Paste Token
Insert your JWT string (usually starts with 'ey...').
2
Decode
Click "Decode Token" to parse the Base64Url parts.
3
Inspect Claims
View the Header and Payload data in JSON format.
This tool runs 100% in your browser. No data is sent to any server.