How to Resize Windows 8 Icons

You can make larger or smaller the icons on the desktop or on the metro user interface in Windows 8.

Change size of icons on Windows 8 Desktop :
Use the mouse
Select all or some of icons
Press and hold  Ctrl/Control key, then use scroll on the mouse to resize the icons.

Select some or all icons using mouse
Use scroll on  the mouse to make icons  smaller or larger 

Change the size of icons in Mertro UI :
To toggle between Desktop and Metro UI, press Windows key (on the keyboard)
Press and hold the Control key, then use scroll on the mouse to make icon smaller or larger.

In Metro UI, use Ctrl and scroll mouse to change the size of icons, No need to select the icon first