JWT Generator
Decode, verify, and generate JSON Web Tokens (HS256).
Encoded Token
Decoded
Header
ALGORITHM & TOKEN TYPE
Payload
DATA
Verify Signature
HMACSHA256
What is JWT?
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.
How it works?
A JWT consists of three parts separated by dots: Header, Payload, and Signature. The signature is used to verify the message wasn't changed along the way.
Client-Side Security
This tool runs entirely in your browser using the Web Crypto API. Your secrets and tokens never leave your device, ensuring complete privacy.