1. Introduction| w3c.github.io
InfraUnicode and Encoding| html.spec.whatwg.org
Learn why tools that monitor Core Web Vitals metrics may report different numbers, and how to interpret those differences.| web.dev
User-centric performance metrics are a critical tool in understanding and improving the experience of your site in a way that benefits real users.| web.dev
HTML| html.spec.whatwg.org
The dominant costs of processing JavaScript are download and CPU execution time.| v8.dev