Pixelmash

Pixelmash is an innovative new pixel art and animation tool based on non-destructive pixelization, perfect for game makers, artists, hobbyists, kids, and lovers of the 8-bit and 16-bit eras.
Pixelmash allows artists and game makers to craft pixel art and animations using a completely new technique, based on painting or importing an image in a high-resolution layer, while non-destructively pixelizing and applying other layer effects to create incredible pixel art. This makes several traditionally difficult pixel art tasks much easier:

• Making outlines, shading, and dithering easily adjustable by having them applied non-destructively as layer effects.
  
  
• Creating animations using layer transforms (rather than having to paint every frame pixel-by-pixel).
  
  
• Easily creating different resolutions and color variants of the same image.
  
  
• Converting photos or other hi-res artwork into pixel art using layer effects and the resolution slider.
  
  
• And much more!