A plugin is a piece of software that adds specific new functionality to WordPress, without requiring any changes to WordPress's own core files. The plugin ecosystem — currently numbering well over 60,000 free options in the official WordPress repository alone — is one of the platform's single greatest strengths.
Common Categories of Plugins
- SEO — Yoast SEO and Rank Math, among others
- Security — Wordfence and Sucuri
- Performance — WP Rocket and W3 Total Cache
- eCommerce — WooCommerce
- Page building — Elementor and Divi
- Forms — WPForms and Gravity Forms
Installing Plugins
- Through the WordPress dashboard's built-in plugin search, for anything in the official repository
- By manually uploading a plugin's zip file, for premium plugins purchased outside the repository
- Via FTP, in less common cases where the dashboard upload method isn't available
Choosing Plugins Sensibly
- Check when a plugin was last actively updated
- Read through genuine user reviews and ratings
- Confirm active compatibility with your specific WordPress version
- Avoid installing more plugins than a site genuinely needs — each one adds some potential performance and security overhead