It is a caching plugin that generates static HTML pages from dynamic WordPress pages, improving website performance and speed.

Here are some guidelines for using the WP Super Cache plugin:

1. Install the plugin through the WordPress plugin repository.
2. Enable caching in the plugin’s settings.
3. Configure the caching options to meet your needs.
4. Clear the cache regularly to ensure that changes to your website are reflected immediately.

People use this plugin to speed up their WordPress websites and improve website performance for their visitors. By serving cached pages, the plugin reduces the load on the server and improves page load times, leading to a better user experience and potentially higher search engine rankings.

WP Super Cache is a free caching plugin for WordPress, while WP Super Cache Pro is a paid version of the plugin that offers additional features and support.

The main difference between the two is that the Pro version offers more advanced options for optimizing website performance, such as the ability to customize cache expiration times, and to cache specific pages or posts. The Pro version also provides additional support and access to updates, as well as premium features such as detailed performance statistics and the ability to cache pages for logged-in users.

In general, the WP Super Cache Pro plugin is designed for websites with higher traffic and more demanding performance requirements, while the free WP Super Cache plugin provides a good starting point for most WordPress sites.