You've looked through your field data, and it turns out that you have some slow interactions. The next step is to learn more about how to manually test those interactions, and identify the causes behind them.| web.dev
As a page loads, many resources are referenced within its HTML that provide a page with its appearance and layout through CSS, as well as its interactivity through JavaScript. In this module, a number of important concepts related to these resources and how they affect a page's load time are covered.| web.dev
A step-by-step guide on how to break down LCP and identify key areas to improve.| web.dev
The dominant costs of processing JavaScript are download and CPU execution time.| v8.dev