This post introduces the Interaction to Next Paint (INP) metric and explains how it works, how to measure it, and offers suggestions on how to improve it.| web.dev
Introduction to the CrUX dataset.| Chrome for Developers
This post introduces the Largest Contentful Paint (LCP) metric and explains how to measure it| web.dev
This post introduces the Time to First Byte (TTFB) metric and explains how to measure it.| web.dev
This post introduces the Cumulative Layout Shift (CLS) metric and explains how to measure it.| web.dev
This specification defines an interface for web applications to access the complete timing information for navigation of a document.| www.w3.org
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