#  Lighthouse 설치https://chromewebstore.google.com/detail/lighthouse/blipmdconlkpinefehnmjammfjpmpbjk LighthouseLighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.chrome.google.com   #  성능 확인 - [F12]로 개발자 도구 실행