OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information.
$ npm install --save optipng-bin
const {execFile} = require('child_process');
const optipng = require('optipng-bin');
execFile(optipng, ['-out', 'output.png', 'input.png'], err => {
console.log('Image minified!');
});
$ npm install --global optipng-bin
$ optipng --help
MIT © imagemin