Lighthouse - Chrome Web StoreLighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps. Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps. When auditing a page, Lighthouse runs a barrage of tests against the page, and then generates a report on how well the page did. From here you can use the failing
今年は令和何年？
