The Importance Of Page Speed Optimization
Web page speed optimization should be a top priority for any website owner. The speed of your site dramatically impacts your site's SEO (search engine optimization) and bounce rate. Bounce rates are calculated as the number of single-page sessions of zero-second duration divided by the total number of page sessions on your website. As you can see, a high number of zero-second page hits means that people aren't waiting for your site to load before they leave.
Google provides a tool called PageSpeed Insights that allows you to see how it regards your website's page optimization speed. It doesn't matter what other tools may indicate (such as those provided by your web host) because it's these results that determine how Google calculates page rank for SEO.