"The problem occurs when people create images in programs that don't anti-alias the text (or don't use SVG fonts)."
I haven't seen a graphics program that didn't automatically do anti-aliasing since Lincoln was president. I highly doubt the OP is using a program that old. Besides, an aliased image (whether photo or text) doesn't look fuzzy. It looks jagged and broken up. It sounds to me like his images are being resized in the reader.