Google will start to use page speed in rankings in 2018

To make sure your website does well in Google’s search rankings there are a number of important factors, a new one for 2018 is page speed.

https://webmasters.googleblog.com/2018/01/using-page-speed-in-mobile-search.html

Some resources to help anlayze site performance.

Audit your site from Chrome.

https://developers.google.com/web/tools/lighthouse/#devtools

A page speed testing tool from Google.

https://developers.google.com/speed/pagespeed/insights/

General information on site experiences.

https://developers.google.com/web/tools/chrome-user-experience-report/