Making icons for windows applications can be a challenge. We created a simple tool to help you get an idea what the icon will look like easily. Simply upload a multi sized .ico file and instantly see the results in the taskbar. It also displays the common icon sizes so you can tell which sizes are included in your ico file and what they will look like on screen.
Common icon sizes –
256×256 Pixels
128×128 Pixels
64×64 Pixels
32×32 Pixels
16×16 Pixels
Creating a small icon (as used in the windows taskbar can be tricky). Get best results by re-sampling a larger icon in steps taking it down one size at a time to get to the smallest size. Use a 96 dpi setting for best results.
Reference articles –
http://blogs.msdn.com/b/jfoscoding/archive/2009/10/11/high-dpi-it-s-an-everyone-thing.aspx
Other tools –
@icon sushi