Resizing icon (iOS)

config.js

// npm install -g mobile-icon-resizer
// https://github.com/muzzley/mobile-icon-resizer

// mobile-icon-resizer -i icon1024.png --platforms ios --config config.js --iosof ios

function make(width, scale) {
  var name = width + "";
  var filename;
  if (scale === 1) {
    filename = "-" + name + ".png";
  } else {
    filename = "-" + name + "@" + scale + "x.png";
  }
  return {
    "size" : width + "x" + width,
    "idiom" : "iphone",
    "filename" : filename, // The filename will be prefixed with the provided iOS filename prefix
    "scale" : scale + "x"
  }
}

var config = {
  iOS: {
    "images": [
      make(20, 1),
      make(20, 2),
      make(20, 3),

      make(29, 1),
      make(29, 2),
      make(29, 3),

      make(40, 1),
      make(40, 2),
      make(40, 3),

      make(60, 2),
      make(60, 3),

      make(60, 2),
      make(60, 3),

      make(76, 1),
      make(76, 2),

      make(83.5, 2),
      make(1024, 1),
    ]
  }
};

// Don't forget to export the config object!
exports = module.exports = config;