 
 Tip: for even more sizes, click on your desktop and hold down the control key (Ctrl) then scroll up or down with your mouse wheel to go as low as 16x16 pixels to over 200 pixels!
 To resize icons in Windows Explorer, click on the "Change your view - More options" dropdown, and switch between Extra Large Icons, Large Icons, Medium Icons, or Small Icons. The "List", "Details", "Tiles", and "Content" views all have their own icon size as well.
 To resize icons in Windows Explorer, click on the "Change your view - More options" dropdown, and switch between Extra Large Icons, Large Icons, Medium Icons, or Small Icons. The "List", "Details", "Tiles", and "Content" views all have their own icon size as well. 
 Note: Windows 7 always uses small icons for the shortcuts under "All Programs".