Simply right-click anywhere on the desktop and click on View. OK, so how about those large desktop icons? That’s also very easy to change. Reduce Size of Desktop Icons in Windows 7/8/10
Make sure to click the toggle to turn it on. You should see an option called Use small taskbar buttons. This will bring you to the new Settings screen in Windows 10. For Windows 10, you right-click on the taskbar and choose Taskbar settings. Much better! Of course, you can uncheck that box if you prefer the large icons on the taskbar. Here’s a screenshot with the new smaller taskbar in comparison to the large desktop icons. On the Taskbar tab, check the Use small icons box.
