Complex sentence: For example, you might use pamscale to shrink an image by 10%, pamcomp to overlay one image on top of another, pbmtext to create an image of text or reduce the number of colors in an image with pnmquant.
Split into simpler sentences: For example, you might use pamscale to shrink an image by 10%. Or reduce the number of colors in an image with pnmquant.