Icon Editing Program

I need a program to make my icon disabled (Darker Version) if you know what the programs called can you tell me

Think you can do that with wc3 map utilities.

That's W3M Map Utilities and the site is http://w3m.co.kr, it can add a clickable border to an icon, make a disabled (darkened) version of it, remove border, add auto-cast border, convert it to grayscale, invert colors.

Thanks for helping me