if_alpha

gistfile1.txt

{
    "application_id": "YOUR_APP_ID",
    "src" : "https://s3.amazonaws.com/img.blitline/test_pngs/tux.png",
    "v": "1.20",
    "extended_metadata" : true,
    "functions": [
        {
            "name": "no_op",
            "save": {
                "image_identifier": "MY_CLIENT_ID",
                "extension" : "jpg",
                "if_alpha" : "png"
            }
        }
    ]
}