gistfile1.txt

{
    "application_id": "YOUR_APP_ID",
    "src": "http://cdn.blitline.com/filters/boys.jpeg",
    "functions": [
        {
            "name": "script",
            "params": {
                "bash_string": "convert input.png -set comment 'geometry:%g\ntrim bounding box:%@\nx offset:%x\ny offset:%y\nfile:%t' -trim -scale '160x160>' -gravity center -extent '160x160>' -quality 90 -profile sRGB.icc +profile 'xmp' +profile 'iptc' output.png"
            },
            "save": {
                "extension": ".jpg",
                "save_metadata" : true,
                "save_profiles" : true,
                "image_identifier": "MY_CLIENT_ID"
            }
        }
    ]
}