I Have created pixel art in Photoshop and am importing into illustrator. Every time I import, the pixel art looks 'fuzzy', but I want the pixels to retain their hard crisp edge. How do I ask Indesign not to interpolate the image?
it looks fine in Photoshop or any other application.
Are you importing into Illustrator (in which case you should ask in the Illustrator forum) or InDesign?
ID always uses a screen preview of some sort. The best you will get is if Display Performance is set to High Quality Display.