There a multiple ways to navigate directories in ImageManager. You can click on the directories within the manager, use the sidebar on the left or use the breadcrumbs!
By default, ImageManager will show all resources within a directory in cards. This gives a great impression of the directory contents, but can be annoying in very large directories. The card view gives a lot of information; image usage, directory- or filename and the amount of files or filesize.
ImageManager comes with a tableview as well. This view is much more compact, but shows the exact amount of information as the cards. Use the table view to navigate through large directories.
Switching the views is easy. Locate the grey switch button at the right side of the browser screen beneath settings and click it. ImageManager will stay in the current view until you decide to switch the view again.