@jimbly/zopflipng-bin

This fork includes the binary dependencies without needing install scripts or run-time internet access. This fork includes the latest Win32 version which fixes an inability to read some files output by optipng.

Fork usage, in package.json:

  "overrides": {
    "zopflipng-bin": "npm:@jimbly/zopflipng-bin@^1.0.0"
  }

Original documentation below

zopfli Compression Algorithm is a new zlib (gzip, deflate) compatible compressor that takes more time (~100x slower), but compresses around 5% better than zlib and better than any other zlib-compatible compressor

You probably want imagemin-zopfli instead.

Install

$ npm install zopflipng-bin

Usage

import {execFile} from 'node:child_process';
import zopflipng from 'zopflipng-bin';

execFile(zopflipng, ['-m', '--lossy_8bit', 'input.png', 'outout.png'], () => {
	console.log('Image minified!');
});

CLI

$ npm install --global zopflipng-bin

$ zopflipng --help

License

MIT © Imagemin