In this tutorial, we're going to learn how to prevent WordPress from generating multiple (resized) versions of an image. As of WordPress 4.8.1, with the default Twenty Seventeen theme, WordPress will generate six additional resized versions of a single image. I've tested it on a clean installation, and here's a screenshot to prove it.
WordPress is the number one content management system (CMS) in use today, running approximately 27 percent of the entire internet. Several high-traffic websites run on WordPress, and many utilize media, such as images and videos, to attract users and meet their needs.