• Online version: https://spritefusion.com/pixel-snapper
• Desktop version: https://www.spritefusion.com/pixel-snapper#desktop-edition

A tool to snap pixels to a perfect grid. Designed to fix messy and inconsistent pixel art generated by AI.

Current AI image models can't understand grid-based pixel art.

• Pixel are inconsistent in size and position.
• The grid resolution can drift over time.
• Colors are not tied to a strict palette.

With Pixel Snapper:

• ✅ Pixel are snapped to a perfect grid.
• ✅ The grid resolution is consistent and can be scaled to pixel resolution.
• ✅ Colors are tied to a strict, quantized palette.

• AI generated pixel art that needs to be snapped to a grid.
• Procedural 2D art that doesn't fit a grid like tilemaps or isometric maps.
• 2D game assets and 3D textures that need to be perfectly scalable.

Pixel Snapper preserves as much details as possible like dithering.

A standalone build of Pixel Snapper coming with these features:

• Fast batch processing
• 100% offline desktop app
• One-time purchase, yours forever!
• Free lifetime updates
• Works on Mac, Linux, and Windows

Download the desktop application

Requires Rust installed on your machine.

git clone https://github.com/Hugo-Dz/spritefusion-pixel-snapper.git
cd spritefusion-pixel-snapper

cargo run input.png output.png

The command accepts an optional k-colors argument:

cargo run input.png output.png 16

Use a directory as the input path to process a batch.

cargo run sprites/batch_inputs sprites/batch_outputs 16

You can also override the auto-detected pixel size with --pixel-size:

cargo run input.png output.png --pixel-size 8
cargo run sprites/batch_inputs sprites/batch_outputs 16 --pixel-size 8

This is useful when the auto-detection doesn't match the expected grid size. The value must be between 1 and half the smallest image dimension.

git clone https://github.com/Hugo-Dz/spritefusion-pixel-snapper.git
cd spritefusion-pixel-snapper

Build the WASM module:

wasm-pack build --target web --out-dir pkg --release

Then use the WASM module in your project:

import init, { process_image } from "./pkg/spritefusion_pixel_snapper.js";

await init();

// process_image(inputBytes, kColors?, pixelSizeOverride?)
const outputBytes = process_image(inputBytes, 16);

Pass null for any optional argument you want to leave on its default behavior.

Pixel Snapper is a Sprite Fusion project. Sprite Fusion is a free, web-based tilemap editor for game developers supporting a wide range of engines including Unity, Godot, Defold, and GB Studio.

MIT License Hugo Duprez