How to get a great score ALSO on Google PageSpeed Insight
As long as I can't create any Training, I'm going to write here how I managed to get a great score (above 90%) not only on Pingdom and GTMetrix, but also with Google PageSpeed Insight!
Even though my website scored 98%-97% with GTMetrix, and was very well recognized also by the Pingdom SpeedTest tool, it also got 74% on the mobile check of Google PageSpeed Insight.
After a quick research on Google and in the Wordpress Plugins area, I could find a plugin, named Above The Fold Optimization (url: https://it.wordpress.org/plugins/above-the-fold-op...), which is aimed to solve the problems I've mentioned before.
The plugin itself is not very user-friendly, and it requires a bit of actions to be performed in order to have everything sorted out, but after a while of reading/understanding I was able to get a really good 92% score on the PageSpeed mobile score!
The plugin asks (and checks whether already done) to install another plugin, Google Webfont Optimizer (url: https://it.wordpress.org/plugins/google-webfont-op...), which in combination with another plugin, Autoptimize (url: https://it.wordpress.org/plugins/autoptimize/), allows to improve the way the fonts are served over our websites!
As I said it's not an install-and-forget plugin, it needs at least a bit of initial optimization, but it's not so difficult and in a couple of steps everything should be working properly and your websites would be able to score great also on the Google PageSpeed Insight tool.
Please let me know what you think about and don't be worried to ask for any issues!