Ditherista is a small Windows, Linux and macOS GUI application for creating black-and-white dithered images. It features easy import and export and over 90 different dithering methods.
Main interface on macOS:
- Over 90 different dither methods with adjustable parameters
- Import / export your files via drag & drop, copy & paste or via open and save file dialogs
- Adjust brightness, contrast and gamma
- Available on Windows, macOS and Linux
- Performs calculations in linear color space for increased accuracy
- Supported image formats: PNG, JPG, BMP, GIF
- Support for HiDPI and Retina displays
Main interface on Windows:
Main interface on Ubuntu:
Run the setup.exe file and follow its instructions. Shortcuts for launching the application will be created automatically by the installer.
Double-click the .dmg and drag the Ditherista appliation into your system's Applications folder.
Either double click the .deb file to install it, or install via the command
dpkg -i ditherista_setup.deb. Ditherista supports HiDPI mode on linux, however, depending on
your display manager, it may not automatically recognize it. In this case, launching Ditherista via
QT_SCREEN_SCALE_FACTOR=2 ./ditherista may help.
Tip: Also consult the built-in Help for instructions.
Loading images:
- Drag an image into the application from the Windows Exporer or macOS Finder.
- You can also use copy and paste to load images
- Or use the File->Open... menu entry or the
CTRL+O(Windows and Linux) /Command+O(macOS) keyboard shortcuts
Dithering an Image:
- Pick any ditherer from the right hand side list
- Below the list you will see the selected ditherer's name and any options you can adjust
- On the bottom, you can adjust the source image's brightness, contrast and gamma. There is also an option to show the source image, so you can directly compare it with the dither results.
Saving dithered images:
- Drag them out of the viewport onto the Desktop or an open folder in the Windows Explorer of macOS Finder.
- You can also use copy and paste to export the current dithered image
- Or use the File->Save and File->Save As... menu entries or the
CTRL+S(Windows and Linux) /Command+S(macOS) keyboard shortcuts
Notes:
- The largest image size supported is 4k by 4k resolution.
- The DBS ditherer can take up to a minute or longer to calculate the dithered image on slow systems!
- Dithered images will be cached, so they won't be re-calculated every time you switch ditherers. However, the cache will reset when you adjust the source image.
- You can use the cursor keys to quickly move up and down the list of ditherers.
Please refer to the BUILDING.md file for building on Windows, Linux and macOS.
Ditherista supports the following dithering methods:
| Original | Grid dither | Xot error diffusion |
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| Diagonal error diffusion | Floyd Steinberg error diffusion | ShiauFan 3 error diffusion |
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| ShiauFan 2 error diffusion | ShiauFan 1 error diffusion | Stucki error diffusion |
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| 1D error diffusion | 2D error diffusion | Fake Floyd Steinberg error diffusion |
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| Jarvis-Judice-Ninke error diffusion | Atkinson error diffusion | Burkes error diffusion |
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| Sierra 3 error diffusion | Sierra 2-row error diffusion | Sierra Lite error diffusion |
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| Steve Pigeon error diffusion | Robert Kist error diffusion | Stevenson Arce error diffusion |
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| Blue Noise dithering | Bayer 2x2 ordered dithering | Bayer 3x3 ordered dithering |
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| Bayer 4x4 ordered dithering | Bayer 8x8 ordered dithering | Bayer 16x16 ordered dithering |
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| Bayer 32x32 ordered dithering | Dispersed Dots v1 ordered dithering | Dispersed Dots v2 ordered dithering |
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| Ulichney Void Dispersed Dots ordered dithering | Non-Rectangular v1 ordered dithering | Non-Rectangular v2 ordered dithering |
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| Non-Rectangular v3 ordered dithering | Non-Rectangular v4 ordered dithering | Ulichney Bayer 5x5 ordered dithering |
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| Ulichney ordered dithering | Clustered Dot v1 ordered dithering | Clustered Dot v2 ordered dithering |
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| Clustered Dot v3 ordered dithering | Clustered Dot v4 ordered dithering | Clustered Dot v5 ordered dithering |
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| Clustered Dot v6 ordered dithering | Clustered Dot v7 ordered dithering | Clustered Dot v8 ordered dithering |
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| Clustered Dot v9 ordered dithering | Clustered Dot v10 ordered dithering | Clustered Dot v11 ordered dithering |
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| Central White-Point ordered dithering | Balanced Central White-Point ordered dithering | Diagonal ordered dithering |
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| Ulichney Clustered Dot ordered dithering | ImageMagick 5x5 Circle ordered dithering | ImageMagick 6x6 Circle ordered dithering |
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| ImageMagick 7x7 Circle ordered dithering | ImageMagick 4x4 45-degree ordered dithering | ImageMagick 6x6 45-degree ordered dithering |
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| ImageMagick 8x8 45-degree ordered dithering | ImageMagick 4x4 ordered dithering | ImageMagick 6x6 ordered dithering |
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| ImageMagick 8x8 ordered dithering | Variable 2x2 ordered dithering | Variable 4x4 ordered dithering |
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| Interleaved Gradient ordered dithering | Ostromoukhov variable error diffusion | Zhou Fang variable error diffusion |
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| Thresholding | DBS v1 dithering | DBS v2 dithering |
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| DBS v3 dithering | DBS v4 dithering | DBS v5 dithering |
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| DBS v6 dithering | DBS v7 dithering | Kacker and Allebach dithering |
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| Modified Riemersma (Hilbert Curve 1) dithering | Modified Riemersma (Hilbert Curve 2) dithering | Modified Riemersma (Peano Curve) dithering |
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| Modified Riemersma (Fass0 Curve) dithering | Modified Riemersma (Fass1 Curve) dithering | Modified Riemersma (Fass2 Curve) dithering |
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| Modified Riemersma (Gosper Curve) dithering | Modified Riemersma (Fass Spiral) dithering | Riemersma (Hilbert Curve 1) dithering |
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| Riemersma (Hilbert Curve 2) dithering | Riemersma (Peano Curve) dithering | Riemersma (Fass0 Curve) dithering |
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| Riemersma (Fass1 Curve) dithering | Riemersma (Fass2 Curve) dithering | Riemersma (Gosper Curve) dithering |
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| Riemersma (Fass Spiral) dithering | Pattern (2x2) dithering | Pattern (3x3 v1) dithering |
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| Pattern (3x3 v2) dithering | Pattern (3x3 v3) dithering | Pattern (4x4) dithering |
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| Pattern (5x2) dithering | Lippens and Philips v1 dot dithering | Lippens and Philips v2 dot dithering |
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| Lippens and Philips v3 dot dithering | Lippens and Philips (Guo Liu 16x16) dot dithering | Lippens and Philips (Mese and Vaidyanathan 16x16) dot dithering |
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| Lippens and Philips (Knuth) dot dithering | Knuth dot diffusion | Mini-Knuth dot diffusion |
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| Optimized Knuth dot diffusion | Mese and Vaidyanathan 8x8 diffusion | Mese and Vaidyanathan 16x16 dot diffusion |
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| Guo Liu 8x8 dot diffusion | Guo Liu 16x16 dot diffusion | Spiral dot diffusion |
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| Inverted Spiral dot diffusion | ||
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