In 2018, the average time to fully load a mobile page was 15 seconds. That is substantially higher than Google’s recommended page load time of 3 seconds.
So, of course, reducing the total load time remains a top priority for allowing user interaction as quickly as possible.
But page speed isn’t only about total page load time; it’s also about what users experience in those 3 (or 15) seconds. It’s essential to consider how efficiently pages are rendering.
This is accomplished by optimizing the critical rendering path to get to your first paint as quickly as possible.
Read the full post on Search Engine Journal .