If your WordPress site is slow, there are several possible causes: poor quality hosting, heavy images, too many plugins or a cluttered database. To remedy this, you can choose suitable hosting, optimize and compress your images, activate caching with a plugin like W3 Total Cache, limit the number of plugins installed, clean up your database with a tool like WP-Optimize, use a CDN to speed up resource loading and minify CSS and JavaScript files. These actions should improve your site’s speed.