What is a JWT?
A JSON Web Token is a compact string containing a header, payload and optional cryptographic signature.
Security
JWT Generator
Create and sign JSON Web Tokens with editable headers, payloads and expiration claims.
Tool
JWT Generator
Create and sign JSON Web Tokens with editable headers, payloads and expiration claims.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this JWT generator to build test tokens from editable JSON headers and payloads. Create unsigned tokens or sign them locally with an HMAC secret for development, API testing and integration work.
Examples
- {"alg":"HS256","typ":"JWT"}
- {"sub":"1234567890","name":"John Doe","admin":true}
- {"iss":"alinra","aud":"example-api"}
Frequently Asked Questions
Is JWT payload data encrypted?
No. Standard JWT payloads are Base64URL encoded and can be read by anyone who has the token.
Can generated tokens be used in production?
Generated tokens are suitable for testing. Production tokens should be issued by a trusted authentication service with secure key management.