If you want to print a tiny pixel art scaled up, but don’t want it becoming blurry because of anti-alias:
- Save the picture as a PNG file.
- Convert it into a PDF. I recommend using ZamZar, because you don’t need to download anything or sign up for an account.
- Save and print the PDF file. If your printer has an option for “pixel smoothing” or something similar, turn that off in the “Printer Properties”.
- Enjoy your anti-anti-aliased pixel art!