pngquantjs

pngquantjs is a native nodejs module for pngquant library see https://github.com/ImageOptim/libimagequant

Warning

Curently this package can only run on unix-like systems

Warning

Currently this package doesn't use pre-built binaries. It builds addon from source code while package is installed. Compilation process uses cargo so this binary should be in the path.

Install

npm install pngquantjs

Example

npm install pngjs

import fs from "fs/promises";
import { PNG } from "pngjs";
import { quantize } from "pngquantjs";

async function test() {
  const file = await fs.readFile("node_modules/pngquantjs/assets/nodejs.png");
  const png = PNG.sync.read(file);
  const result = quantize(png.data, png.width, png.height, {
    speed: 1,
    qMin: 0,
    qMax: 80,
    ditheringLevel: 1.0,
  });
  console.log(result);
}

test();

Contribution

Development

git clone https://github.com/diodeiot/pngquantjs --recursive
cd pngquantjs
yarn
yarn build

When contributing code, please write relevant tests and run npm test before submitting pull requests.

License

MIT