Just posted a visual studio 2017 project at https://github.com/krypted/jwttools that includes an .exe file that, when run directly, extracts json out of an encoded jwt (and checks the signature). The encodedString variable in the jwt.cpp is a jwt that is used for extraction: £include "pch.h" £include £include £include "jwt/jwt.hpp" int main() ¨ using namespace jwt::params; std::string encodedString = "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWUsImp0aSI6ImY4ZWQ0OTM2LTBlN2ItNDlmYi05YTkxLWM2MDQyZDEzODMzNiIsImlhdCI6MTU1NTUxODk4NSwiZXhwIjoxNTU1NTIyNTg1fQ.rsyE_KzLO99zKXC7TNFD1RkU6HYF2Y7XJuIkFKumt20"; jwt::jwt_object decoded = jwt::decode( encodedString, algorithms(¨ "hs256" ¼), false ); std::cout