Factors that Slow Down Your Website 

In This Context, Critical Measuring Points/ Factors Are: 

  • Time to first byte (TTFB) = response time of the server 
  • Cumulative Layout Shift (CLS) = content elements that change position when reloaded 
  • First Contentful Paint (FCP) = first loaded content elements that give the user a positive user experience 
  • Largest Contentful Paint (LCP) = loading time of the most significant content element 
  • First Meaningful Paint (FMP) = loading time of the first content element with concrete meaning (not: background image or logo) 
  • Time to Interactive (TTI) = loading time until the first possible interaction by the user 
  • First Input Delay (FID) = Shows interactivity. For the best possible user experience, websites should have an FID < 100 milliseconds. 

If you want to know how fast - or how slowly - your website is up-to-date, it is best to check the loading speed with these partly free tools: 

Google PageSpeed ​​Insights 

  • Google Data Studio 
  • Google Search Console 
  • Lighthouse Report 
  • Chrome DevTools & UX Report 
  • Pingdom Website Speed ​​Test 
  • GTmetrix 

With the help of Google's open-source tools, you not only determine the pure speed index but can also identify, for example, reloading "bouncing" content elements. Above all, Google usually delivers clear steps to improve the user experience. 

Important: The speed index alone says little. A website can rank very well - and still load comparatively slowly. PageSpeed ​​in milliseconds is just one factor among many to evaluate a WordPress site.