Dithering fakes extra shades using a pattern of dots. Early computers could only show a couple of colours, so they alternated pixels in an ordered grid to trick the eye into seeing greys that the hardware could not actually display.
Open the dither tool →Free · no sign-up · runs in your browser — your photo is never uploaded.
This tool uses an ordered Bayer matrix to quantise your photo down to just a few levels at a chunky pixel size — producing the crisp, patterned look of 1-bit Macintosh art, Game Boy screens and early print halftones.
Dithering simulates additional colours or shades by arranging pixels of the available colours in a pattern, so the eye blends them. It was essential on early 1-bit and limited-palette displays.
Reduce it to a few levels with ordered dithering at a chunky pixel size. Set Levels to 2–4 and raise Pixel size in this tool.
Yes, free and private — processing happens in your browser with no upload.