Convert PNG to ICO
$ npm install --global to-ico-cli
$ to-ico --help
Usage
$ to-ico <input> ... > favicon.ico
$ cat <input> | to-ico > favicon.ico
Example
$ to-ico unicorn-16x16.png unicorn-32x32.png > favicon.ico
$ cat unicorn-32x32.png | to-ico > favicon.ico
MIT © Kevin Martensson