Loading time is a major contributing factor to page abandonment. Users will go elsewhere if pages take longer than 3-4 seconds to load.
The need for pages that load quickly is more acute for those on mobile devices because the users feel that the page loading takes longer than it does on desktops, and it happens with the majority of current websites (73 percent according to KISSmetrics, in their article Loading Time).
A good part of the loading time is spent on performing client-side processing and loading resources such as stylesheets, script files, and images.
In this chapter we will learn ways to improve the performance for responsive websites, by: