Using the tool provided free by Google PageSpeed Insights you are able to analyze the results of the loading speed for each page that makes up your site.
The higher the result, the greater the chance that the site will reach the top positions of Google's SERP for specific search queries.Another free tool that helps to analyze in detail the resources loaded from each page of the site is provided by Pingdom.
The service is also useful because it allows you to simulate requests from various parts of the world.
Try testing the toppersystem.com pages and compare the results with your favorite sites. Art. id:50 | https://www.toppersystem.com/extra_information.php?lang=en