Fast website performs better than slow one. Visitors love responsive pages more. Slowly loading webs are abandoned after few clicks. At other hand, people browse more pages on fast websites. Loading time may be measured easily. Speed of loading shows overall health of your website. A fast loading website helps also improve your search rankings. Search engines love faster websites. Good hosting also helps to improve load time. Customers don't like waiting. Slowness causes buyers to lose interest and jump back where they come. Your business suffers, when your website doesn't work properly. Competitors win, when they have faster working pages. Measure load times on desktop computers. Also on mobile devices speed is extremely important. Testing helps to understand, how fast web is working.