The busiest online shopping season is about to start and it’s time to make a quick check on whether the top shopping sites are prepared for the big consumer rush or whether they are likely going to fail because their pages are not adhering to Web performance best practices. We analyzed the top problems and explained them in detail. Here is a glimpse:
Problem #1: Too many Redirects result in delayed First Impression
The browser can’t render any content until there is content to render. From entering the initial URL until the browser can render content there are several things that happen: Resolving DNS, establishing connections, following every HTTP redirect, downloading HTML content. One thing that can be seen on some of the retail sites is the excessive use of HTTP Redirects. Here is an example. From entering the initial URL until retrieved from the initial HTML document the browser had to follow 4 redirects taking 1.3seconds
Problem #4: 3rd Party Plugins such as Superfish
Read the full article including all 8 Web Performance Problems.