Para utilizar este tool necesitaras:
Un complemento para tu navegador, que te permita hacer uso de CORS. Te recomiendo:
https://chrome.google.com/webstore/detail/allow-control-allow-origi/nlfbmbojpeacfghkpbjhddihlkkiljbi
Steps to using this tool
Should have a extension in your browser, that allows you to use CORS. I recommend:
https://chrome.google.com/webstore/detail/allow-control-allow-origi/nlfbmbojpeacfghkpbjhddihlkkiljbi