Image Cross-Origin Resource Sharing
http://xorigin.aws.af.cm/http://t.co/static/images/bird.png
<body>
<canvas id="canvas"></canvas>
<div id="data"></div>
</body>var canvas = document.getElementById('canvas'),
ctx = canvas.getContext('2d'),
img = new Image();
img.onload = function() {
ctx.drawImage(img, 0, 0, img.width, img.height);
document.getElementById('data').innerHTML = canvas.toDataURL();
};
// CORS
img.crossOrigin = 'anonymous';
img.src = 'http://xorigin.aws.af.cm/http://t.co/static/images/bird.png';