Dual Shades edits photos by keeping a selected subject in color while turning the background black and white.
Ditherista
Ditherista provides a desktop app for making color or black-and-white dithered images, with over 90 methods and import/export.
About Ditherista
Ditherista is a GUI application for Windows, macOS and Linux that creates color and black-and-white dithered images. It offers over 90 dithering methods with adjustable parameters, plus controls for brightness, contrast, gamma and saturation. You can import and export files by drag-and-drop, copy and paste, or file dialogs, and load custom palettes. The project describes its current release as a release candidate that is fully functional.
Pricing is not clearly stated.
Key features
- Over 90 dithering methods with adjustable parameters
- Drag-and-drop, copy-paste and file dialog import and export
- Brightness, contrast, gamma and saturation adjustments
- Palette editing for mono and color dithering, plus custom palette import
- PNG, JPG, BMP and GIF support, including transparent backgrounds
- HiDPI and Retina display support
- Calculations performed in linear color space
Watch out for
- Some GUI elements may resize incorrectly in a few cases
- LAB 2000 output may look wrong when the reduced palette does not match the source image well
- Largest supported image size is 4k by 4k
- The DBS ditherer can take minutes or longer on slow systems
Ditherista at a glance
- Category
- Design & Creative › Image Creation & Editing
- Type
- App
- Pricing
- Not confirmed. Check the site
- Platforms
- Linux, macOS, Windows
- Details verified
- Oct 22, 2026 · Official source
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Ditherista FAQ
Where can I download Ditherista?
The project lists downloads for Windows, macOS and Linux on itch.io and GitHub Releases.
What should I do if macOS reports that the app is broken?
The project's macOS notes say to run xattr -cr /Applications/Ditherista.app in Terminal.
Where can I get custom palettes?
The project says custom palettes can be loaded from lospec.com in Paint.NET format, a text-based format.
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