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Image Dithering

Last modified: Dec 10th, 2025

See also colour quantization

Education

• DITHER.TXT
• DHALF.TXT
• Ditherpunk - excellent intro on monochrome dithering
• Ditherpunk 2 my blog post
• Image Dithering: Eleven Algorithms and Source Code
• Ordered Error Diffusion Dithering - interactive demo
• List of error diffusion schemes
• Image dithering in Matlab - various matrices and comparison
• Digital Halftoning book by Robert Ulichney, on Google Books
• Source of Steven Pigeon dithering
• What every coder should know about gamma

Software

• hitherdither - dithering algos for python’s Pillow image lib
• My dithering software in go: library, CLI
• Code for how lowtechmag dithers their images
• ImageMagick color quantization and dithering examples
• Dither Me This - cool web ditherer with nice presets

Misc

• Joel Yliluoma’s arbitrary-palette positional dithering algorithm
• Forum post on how Return of the Obra Dinn game did dithering