PageSpeed Insights

PageSpeed Insights (PSI) is a tool from Google that analyzes the desktop and mobile speed of a page and provides insights into how to improve the speed of that page. Most prominently, it looks at First Contentful Paint (the time between the navigation to the page and when the browser renders the first element of DOM content) and First Input Delay (the time between when a user interacts with your page and when that page responds to the user’s request).

Since the speed of your pages impacts their ability to rank well in Google, it’s advantageous for SEO to follow Google’s advice on ways to improve your pages’ speed. Some of the most common recommendations for improving page speed include minification, limiting your use of redirects, improving server response time, and reducing reliance on render-blocking Javascript.