This generator takes either an Alpha or Color PNG image and creates a pixel art version of said image. It's not merely just a pixel effect, but has options to add outlines based on the color of the image. Customize the body and outline color of your alpha images as well as add a life/magic meter based on your alpha input (see pictures).
Pixel Art includes a built in text generator and life bar generator as well. Great for quickly creating pixel designs should you need a pixel art based texture. Or, you can machine-gun-create pixel art for your game by inputting clip art from an existing library or online instead of making a bunch of pixel art assets by hand.
Check it out: