tl;dr: The author uses ImageMagick to fake an AM halftone print effect on images by splitting into CMYK channels, scaling/rotating each at different angles (0°, 15°, 45°, 75°) to avoid Moiré, then recompositing—optionally remapping to a limited pink palette. The technique is computationally expensive and doesn't reliably reduce file size, so it's purely aesthetic rather than practical. Full shell scripts are provided, along with a workaround (brightness/saturation boost + invert) for overly light images that break the effect.