Website performance is the hot topic these days. In fact, performance is becoming a critical factor for websites. First, users really love fast loading websites. Second, performance affects the SEO page ranking. According to Google, page load speed is one of the key parameters of their ranking algorithm. Thus, it is critical for websites to improve page speed performance – not just for improving users experience, but also for winning against their competitors in Google search results.
For E-commerce websites, this is super critical. If you’re not clear, see the results from Amazon after improving their website page performance:
For every 1 second of improvement they experienced up to a 2% increase in conversions. For every 100 ms of improvement, they grew incremental revenue by up to 1%
Improving page load time
Browsers spend most of the time downloading resources. If the resources ( JS, CSS ) are inside the
HEAD tag, the browser has to download all of them before parsing the HTML. Therefore, users won’t be able to see anything on the screen till all the resources are downloaded.