This article is not about why website speed or performance is important.  I am assuming you already know its importance. This is about why we need to test website performance on different device types. Four main reasons why we need to do that : 1. Website Content is different 2. Internet connection type is different 3. Javascript execution and browser performance is different 4. Most of your users come from different devices Website Content is different Mobile users do not need all the content like desktop users because their intent is different from desktop and laptop users. Many websites design differently depending on device type. Not only look and feel of the website, even content is different depending on the device.[…]