DitherMaster

DitherMaster is a lightweight, standalone dithering application for creating retro graphics. Transform your images with various algorithms!

Warning: DitherMaster is currently in beta and may contain bugs. Use at your own risk.

— Features

• 22+ Dithering Algorithms - From classic to experimental
• 10 Built-in Color Palettes - Retro gaming palettes (C64, Game Boy, NES, CGA) and modern aesthetics
• .HEX Color Palettes Support - Use custom color palettes from places like LOSPEC
• LOSPEC Palette Integration - Directly fetch and use palettes from LOSPEC by slug or URL
• Custom Palette Extraction - Extract colors from your images using k-means clustering
• Multi-Color Tonal Mapping - Create duotone and tritone effects
• Image Pre-Processing - Brightness, Contrast
• CRT Effects - Simulate CRT subpixel rendering, phosphor glow and warp
• Glitch Effects - Pixel sort, scanline glitch, RGB shift, color crush and noise
• Scale Control - Adjustable resolution
• Manual Zoom - Pixel-perfect scaling (1-10x)
• Real-Time Preview - See changes instantly as you adjust settings

— Supported Algorithms

Error Diffusion:

• Floyd-Steinberg - Industry standard, smooth gradients
• Atkinson - High contrast, chunky aesthetic (classic Mac look)
• Jarvis-Judice-Ninke - Stippled, organic appearance
• Sierra - Stochastic, natural-looking distribution

Ordered Dithering:

• Bayer 2×2 - Simple checkerboard pattern
• Bayer 4×4 - Medium detail crosshatch
• Bayer 8×8 - Complex star pattern, finest detail

Halftone:

• Circular Halftone - Print-style dots

Modulation:

• CRT Modulation - Vertical scanlines (retro monitor effect)
• Column Modulation - Horizontal lines
• Dispersed Modulation - Angular diffusion with multi-directional waves
• Circuit Modulation - Circuit board aesthetic with grid pattern
• Tilt Modulation - Diagonal hatching at 45°

Pattern Dithering:

• Random Noise - Classic white noise threshold
• Clustered Dot - Structured dot pattern
• Matrix - Sci-fi cyber look with vertical streaking
• Knit - Diagonal weave pattern (textile aesthetic)
• Cross - Plus-sign shaped patterns
• Square - Block-based mosaic
• Serpentine - Wavy S-curve patterns
• Star - Radiating starburst effect
• Grid - Graph paper style cells
• Stitch - Embroidery-inspired alternating pattern
• Clock - Concentric circles with radial divisions
• Cyber - Futuristic digital glitch with angular breaks

— Included Color Palettes

• Black & White - Classic monochrome
• Commodore 64 - 16-color retro computing palette
• Game Boy - 4 shades of green
• NES - Nintendo Entertainment System colors
• CGA - IBM CGA Palette 1
• Pastel - Soft, modern aesthetic
• Vibrant - Bold rainbow colors
• Earth Tones - Natural browns and tans
• Cyberpunk - Neon magenta and cyan
• Vaporwave - Purple, pink, and cyan aesthetic
• Sunset - Warm gradient palette

— Examples

— System Requirements

A up-to-date Windows 11 version is recommended.

Note: Windows will most-likely show a red warning screen when starting the program. You have to press "More Info" and then "Run Anyway".