JCH-optimize is an excellent tool to speed up a Joomla website. In 3 minutes we are going to download, install and configure it. We will see a big improvement in the Google Pagespeed Insights grades.
You can also check http://joomlaseo.com/SEO-extensions/jch-optimize for more tips on JCH Optimize and more tips for Joomla Performance.
For more about Joomla Performance check my series on https://www.udemy.com/joomla-performance-and-speed/
