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
What is that preload? What does it do? And how can it help you? Preload gives developers the ability to define custom loading logic without suffering the performance penalty that script-based resource loaders incur. In human terms, it’s a way to tell a browser to start fetching a certain resource, because you as authors know that the browser is going to need that particular resource pretty soon.| Smashing Magazine
