js download image code example
Example 1: javascript download image
var a = $("<a>").attr("href", "http://i.stack.imgur.com/L8rHf.png").attr("download", "img.png").appendTo("body");
a[0].click();
a.remove();
Example 2: pyfcm image
extra_notification_kwargs = {
'image': #paste your notification image url here
}
notify_multiple_devices(..,
extra_notification_kwargs=extra_notification_kwargs)