Is 18IMG really free?

Yes. All 25 tools are free to use, with no signup, no file size limit, and no watermarks on output.

Are my images uploaded to a server?

No. Every operation runs entirely in your browser using WebAssembly. Your images never leave your device.

Do I need to create an account?

No. There is no signup, no login, and no tracking. Open the tool and start working immediately.

What file size limits exist?

There are no artificial limits. The only constraint is the memory of your device, since processing happens locally.

What is the difference between Bayer and Floyd Steinberg?

Bayer is a fixed ordered pattern that runs very fast. Floyd Steinberg is an error diffusion algorithm that produces smoother gradients at a slightly higher cost.

Can I use a custom palette?

The current version uses a black and white palette. For full color dithering, the algorithm would need to be extended.

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Dither and Retro

Apply retro dithering effects

Drop images or click to browse

One image.