Mobile Ecommerce sites should be small and fast. You would think this was obvious and industry best practice but it’s not.
Lets take Magento as an example because it is something I know. The professionally developed theme for Westin Gourmet - developed by a company that specialises in Magento - weighs in at 2.5MB for the home page. Using the network tab of Chrome developer tools you can simulate an average 3G data connection - they use 750 kb/sec (that’s kilobits folks!). This gives a full load time of nearly 29 seconds.
OK, a big chunk of that is 1.8MB of images - and you need to send big images if you want it to look good on a high DPI screen like an iPad - but fewer images could have been used without impacting the user experience. 269KB is just fonts. Who is going to wait around for 29 seconds in this day and age.
A blog article by Perficient mentions research by Forrester indicating the two thirds of consumer shopping are happening on a mobile or tablet. This is only going to grow.
It is time to take performance seriously.
Ironically this site automatically designed by the AI of The Grid is over 2MB in size!