Test for webp image support. From: http://stackoverflow.com/questions/5573096/detecting-webp-support#10930441
function testWebP(callback) {
var webP = new Image();
webP.src = 'data:image/webp;base64,UklGRjoAAABXRUJQVlA4IC4AAACyAgCdASoCAAIALmk0mk0iIiIiIgBoSygABc6WWgAA/veff/0PP8bA//LwYAAA';
webP.onload = webP.onerror = function () {
callback(webP.height === 2);
};
};
function notify(supported) {
console.log((supported) ? "webP supported!" : "webP not supported.");
}
testWebP(notify);