Read and creare Apple Icon Image format files
Parse a buffer into a useful structure with each icon type and its data and convert that structure into a buffer to save it back to a valid .icns.
Ensure you have Node.js 8 or later installed. Then run the following:
$ npm install icns-lib
const fs = require('sf');
const icns = require('icns-lib');
const buffer = fs.readFileSync('icons.icns')
// Parse the buffer into a map where the key is the Icon type (icp4, icp5, etc) and the value is a buffer with the data.
const icons = icns.parse(buffer);
Object.keys(icons).forEach(type => {
// Remove all items that are not an image type icon
if (!icns.isImageType(type)) {
delete icons;
}
})
// Save the icon set without all the non-image icons
fs.writeFileSync('icons.icns', icns.format(icons))MIT © Manuel Rueda