Solution: This already exists, Google Lighthouse is one (https://developers.google.com/web/tools/lighthouse https://developers.google.com/web/tools/lighthouse)

Solution: This already exists, Google Lighthouse is one (https://developers.google.com/web/tools/lighthouse https://developers.google.com/web/tools/lighthouse) but many non-Google alternatives exists too (https://alternativeto.net/software/google-lighthouse/ https://alternativeto.net/software/google-lighthouse/)