WordPress plugins are bits of software that can be uploaded to to extend and expand the functionality of your WordPress site.
Note: One of the primary advantages of using the self-hosted version of WordPress from WordPress.org is the ability to upload and use plugins on your WordPress site.
Free vs Premium WordPress Plugins
There are tons, literally tons, of WordPress plugins available for free download from the WordPress.org Plugin Directory. There are also premium or paid WordPress plugins.
Why would you want to pay for a plugin? Well, there are several reasons:
You might be asking what types of things plugins can do. Well, if you can imagine it, there’s probably a plugin for that.