WP Fastest Cache helps your site load faster by creating static copies of your pages. In layman’s terms, they take some of the work off your servers by simplifying the content that browsers have to load. This plugin also helps you minify your CSS and JavaScript so they take up less space, and it’s compatible with Secure Sockets Layer (SSL) and Content Delivery Networks (CDNs).

https://undsgn.com/wordpress-cache-plugin/