The quickest way to apply a dither-like feel in CSS using filter and image-rendering.
This uses contrast + brightness manipulation with pixelation. True per-pixel dithering requires JS (see the Canvas tab),
but this gives a fast, lightweight retro look with zero JavaScript.
Full JavaScript implementation using the HTML <canvas> element — this is the exact algorithm
running in this tool. Drop it into any webpage and call ditherImage() with your settings.
Copy this into your HTML file. Replace your-image.jpg with your image path.
The script initialises automatically on page load.
A ready-to-use React component using hooks. Import it and pass an image src as a prop.