Source

Built-in image Or upload your own

Style

ASCII art Photomosaic Stipple / dots Floyd–Steinberg dither

Controls

Detail / cell size — 10 px

Color (off = monochrome)

ASCII character set

Every effect runs on real pixels read with getImageData. ASCII maps brightness to glyphs, the mosaic averages each cell, stipple sizes dots by darkness, and dither uses Floyd–Steinberg error diffusion. All client-side, no libraries.