To add a specific feature of your site.
Plugins are a powerful and popular platform for building websites and are easily available as well.
It adds a specific feature to your site without having to worry about having knowledge about coding.
Plugins are an important part of the power million WordPress blogs and websites worldwide. The ability to extend WordPress to meet almost any need is a powerful motivator to choose WordPress over other alternatives.
The features and functions covered by plugins range from adding a contact form to your site to increase the page load, to turning your site into a shop eCommerce with all functions.
The selection of plugins available for WordPress is enormous: almost any feature you can think of can be added to your website with an existing plugin, and if it is not usually one can be created.