Image Dithering Online - Free Dithering Tool

Drop your image here

or click to browse • PNG, JPG, GIF, WebP

Original

Dithered

Why Use Our Image Dithering Tool?

Professional-grade dithering algorithms with an intuitive interface. No installation required.

Instant Processing

All dithering happens directly in your browser. No uploads to servers, no waiting for downloads.

8 Dithering Algorithms

Choose from Floyd-Steinberg, Atkinson, Ordered, Halftone, Sierra, Stucki, and more professional methods.

Full Customization

Adjust threshold, brightness, contrast, color palettes, and output scale to get the perfect result.

100% Private

Your images never leave your device. All processing is done locally using JavaScript in your browser.

Free Download

Download your dithered images instantly as high-quality PNG files. No watermarks, no sign-up required.

Works Everywhere

Use on any modern browser — Chrome, Firefox, Safari, Edge. Works on desktop, tablet, and mobile devices.

How to Use Image Dithering Online

Convert your images to dithered versions in three simple steps

Upload Your Image

Drag and drop your image into the upload area, or click to browse your files. Supports PNG, JPG, GIF, and WebP formats.

Customize Settings

Select your preferred dithering algorithm, adjust colors, threshold, brightness, and other settings using the control panel.

Download Result

Preview your dithered image in real-time, then click the Download button to save it as a high-quality PNG file.

Supported Dithering Algorithms

Choose from 8 professional-grade dithering methods for different effects

Floyd-Steinberg Dithering

The most popular error-diffusion algorithm. Distributes quantization errors to neighboring pixels for smooth gradients and natural-looking results.

Atkinson Dithering

Developed for the original Macintosh. Creates higher contrast images with a distinctive retro look by diffusing only 75% of the error.

Ordered (Bayer) Dithering

Uses a threshold matrix to create patterned dithering. Fast processing and produces consistent, structured patterns ideal for pixel art.

Halftone Dithering

Simulates traditional newspaper printing by varying dot sizes. Creates a classic printed media aesthetic perfect for retro designs.

Sierra Dithering

An advanced error-diffusion algorithm that spreads errors over a larger area, producing smoother gradients than Floyd-Steinberg.

Stucki Dithering

High-quality error diffusion with a 12-element kernel. Excellent for preserving fine details while reducing color depth.

Popular Use Cases for Dithered Images

Discover creative ways to use dithering in your projects

Retro Game Graphics

Create authentic 8-bit and 16-bit style game assets

Pixel Art

Convert photos to pixel art with limited color palettes

Print Design

Generate newspaper-style halftone effects

Artistic Effects

Add unique textures and vintage aesthetics

File Size Reduction

Reduce colors while maintaining visual quality

Thermal Printing

Prepare images for 1-bit thermal printers

Frequently Asked Questions

Everything you need to know about image dithering

What is image dithering?

Image dithering is a technique used to simulate colors or shades that aren’t available in a limited color palette. By strategically placing pixels of available colors next to each other, dithering creates the illusion of additional colors or smoother gradients when viewed from a distance. It’s commonly used in retro graphics, pixel art, print media, and to reduce file sizes while maintaining visual quality.

Which dithering algorithm should I choose?

Floyd-Steinberg is the most versatile choice for general use. Atkinson is great for high-contrast retro looks. Ordered/Bayer works best for pixel art and game graphics. Halftone is perfect for newspaper or print effects. Try different algorithms and compare results to find the best fit for your specific image and project.

Is this tool free to use?

Yes! Our image dithering tool is completely free to use with no limitations. There’s no sign-up required, no watermarks on your images, and no restrictions on how many images you can process. All processing happens locally in your browser.

Are my images uploaded to a server?

No. All image processing happens entirely within your web browser using JavaScript. Your images never leave your device and are not uploaded to any server. This ensures complete privacy and also means the tool works offline once the page is loaded.

What image formats are supported?

Our dithering tool supports all common web image formats including PNG, JPG/JPEG, GIF, and WebP. The output is always saved as a high-quality PNG file to preserve the dithering detail without compression artifacts.

Can I use custom colors for dithering?

Yes! Select “Custom Palette” from the Color Mode dropdown to define your own two-color palette. This is perfect for creating Game Boy-style green screens, sepia effects, blueprint looks, or any other custom color scheme you can imagine.