Upload an image to apply a dithering effect
Accepted formats: JPG, PNG, WEBP, BMP, GIF (non-animated)
Paste (Ctrl/⌘+V) or drop an image — or import from a URL
Dithering recreates the look of old games, e-ink screens, and newspaper print by reducing an image to just a few tones and scattering them in a pattern your eye blends back into shading. Image Machine gives you three classic algorithms — Floyd–Steinberg error diffusion for smooth gradients, ordered (Bayer) for a crisp retro grid, and Atkinson for that high-contrast vintage Macintosh feel — plus black & white, grayscale, or colour palettes with an adjustable number of levels. Everything runs locally in your browser, so your image is never uploaded; just pick a style and download the result.
How It Works
Choose a tool
Pick from 120+ tools to resize, convert, compress, or enhance your image.
Upload & edit
Drag and drop your image and adjust the settings. It stays on your device.
Download
Save your result instantly — no watermark, no sign-up required.
Why Image Machine?
Your files never leave your device
All processing runs locally in your browser. Your images are never uploaded to a server.
Completely free
Every tool is free, with no limits, no watermarks, and no hidden costs.
Lightning fast
No upload waiting — your images are processed instantly on your own device.
Professional quality
Pixel-perfect output with full control over format, size, and quality.
Frequently Asked Questions
What is image dithering?
Dithering reduces the number of colours or tones in an image while keeping the illusion of detail by arranging the remaining colours in a fine pattern. It is how old 8-bit games, e-readers, and printed newspapers show shades of grey using only black and white dots.
Which dithering algorithm should I choose?
Floyd–Steinberg spreads the error to neighbouring pixels and gives the smoothest, most photographic result. Ordered (Bayer) uses a fixed grid for a clean, regular retro look. Atkinson keeps highlights brighter and is the classic early-Macintosh style. Try each and pick the look you like.
Does it keep transparency, and are my images private?
Yes to both. Transparent PNG areas stay transparent, and all processing happens entirely in your browser — your image is never sent to a server, so it is completely private.