The classic Image plugin supports inserting images into the editor content. By default it is available in the Standard and Full distributions. It provides the following features when compared to two alternative image plugins, Enhanced Image and Easy Image:
When the Image plugin is enabled, thebutton is automatically added to the toolbar. Once clicked, it opens the Image Properties dialog window that lets you add and configure the inserted image.
If you are looking for more modern image support with a clean UI and features such as image captions, drag and drop positioning, click and drag resizing, image alignment (including centering) with inline styles or CSS classes, custom image styles or cloud storage support with optimized images and responsive markup, try Enhanced Image and Easy Image plugins.