The free WordPress Cache Enabler plugin is a super lightweight HTML to disk caching plugin. It is by far one of the easiest caching plugins to use!
It features the following:
– Automatic and manual clearing of WordPress cache
– Purging individual page and URL cache is easy from admin dashboard
– Widget to display cache size
– Supports responsive images with srcset
– Minification of your HTML and JavaScript
– It supports WordPress multisite and custom post types
– WebP Support (when combined with Optimus plugin, decrease your images by over 50%!)
– Works perfectly with Autoptimize
– HTTP/2 Focused
With the advanced snippet you can even bypass PHP altogether and see amazing speeds.https://wordpress.org/plugins/cache-enabler/