Dither Yuki is a beta-stage image dithering and palette studio built for experimenting with digital images, colors, and visual effects.

The workflow covers everything from opening an image and building a layer stack to working with palettes, applying dithering algorithms, and exporting the result.

Dither Yuki desktop application with layer controls, image preview, dithering effects, and color palette tools

What it can do

  1. Documents — multi-tab projects, Save As, recent files, crash recovery, and unsaved-change protection
  2. Import & Export — PNG, JPG, WEBP, BMP, TIFF, SVG, and ASCII export to TXT, ANSI, HTML, SVG, PNG, and JSON
  3. Layers — non-destructive effects, opacity, 12 blend modes, and undo/redo
  4. 35+ algorithms — Bayer, Floyd–Steinberg, Atkinson, Sierra, halftone, stipple, ASCII, CRT, Glitch, Glow, Curves, Riemersma, and more
  5. Color Lab — palette import/export, color quantization, harmonies, ramps, and multiple palette-generation modes
  6. Patterns — a .dyuki pattern library and manager
  7. Interface — flexible workspace layout, keyboard shortcuts, and in-app updates

Current limitations

Dither Yuki is still in beta, so some features are intentionally outside its scope. It is not a painting, printing, batch-processing, or video tool, and there is currently no Linux version.

Some algorithms also have implementation limitations. Error-diffusion methods currently run on CPU, while ASCII and Riemersma operate on the full document rather than progressive tiles.

The idea

Dither Yuki is built around a simple idea: a dedicated space for experimenting with dithering, palettes, and digital image processing without turning the workflow into a complicated production suite.

What's next

Dither Yuki is still evolving, and there is a lot more planned for the future.

Right now, my main goal is to raise enough support for an Apple Developer Program membership. This will make it easier to distribute Dither Yuki on macOS and provide a smoother installation experience without unnecessary security warnings.

After that, I want to keep improving the existing tools and expand what Dither Yuki can do.

Planned features include:

  • Video and animation support
  • CMYK and improved color management
  • More dithering algorithms and effects
  • Expanded palette and pattern tools
  • Performance improvements
  • Better cross-platform support
  • And much more

The goal is to keep growing Dither Yuki while preserving its main idea: a simple space to experiment, create, and play with images.

Colorful dithered portrait artwork

I'm sorry for the extra step. Dither Yuki is currently not signed with an Apple Developer certificate, so macOS may show a security warning when you try to open the app.

This does not mean the application contains a virus. Dither Yuki is an independent open-source project, and you can review the source code on GitHub.

If macOS blocks the application, you can allow it in:
System Settings → Privacy & Security → Security → Open Anyway

Thank you for your patience and for giving Dither Yuki a try.

Download

I'm sorry for the extra step. Dither Yuki is currently not signed with a code-signing certificate, so Windows Defender or SmartScreen may show a security warning when you try to run the application.

This does not mean the application contains a virus. Dither Yuki is an independent open-source project, and you can review the source code on GitHub.

If Windows blocks the application, you can usually continue by clicking:
More info → Run anyway

Download