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    <p><strong>Test Results</strong>: Bad News, it appears to only work in Chrome. All other browsers (including Android Mobile) give an error like this:</p> <pre><code>Failed: DOM Exception: SECURITY_ERR (18) </code></pre> <p><strong>Mobile Devices</strong> I tested Android (samsung galaxy kernel version 2.6.32.9), Iphone and IPAD V1 and it failed in all three. </p> <p>You can test your own mobile device with this URL: <a href="http://maplarge.com/CrossOriginImageTest.html" rel="noreferrer">http://maplarge.com/CrossOriginImageTest.html</a></p> <p><strong>The Test Script:</strong></p> <pre><code> &lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;Canvas Cross Origin Image Test: Testing for Canvas Cross Domain Image CORS Support&lt;/title&gt; &lt;script type="text/javascript"&gt; function initialize() { //will fail here if no canvas support try { var can = document.getElementById('mycanvas'); var ctx = can.getContext('2d'); var img = new Image(); img.crossOrigin = ''; //domain needs to be different from html page domain to test cross origin security img.src = 'http://lobbydata.com/Content/images/bg_price2.gif'; } catch (ex) { document.getElementById("results").innerHTML = "&lt;span style='color:Red;'&gt;Failed: " + ex.Message + "&lt;/span&gt;"; } //will fail here if security error img.onload = function () { try { var start = new Date().getTime(); can.width = img.width; can.height = img.height; ctx.drawImage(img, 0, 0, img.width, img.height); var url = can.toDataURL(); // if read succeeds, canvas isn't dirty. //get pixels var imgd = ctx.getImageData(0, 0, img.width, img.width); var pix = imgd.data; var len = pix.length; var argb = []; //pixels as int for (var i = 0; i &lt; len; i += 4) { argb.push((pix[i + 3] &lt;&lt; 24) + (pix[i] &lt;&lt; 16) + (pix[i + 1] &lt;&lt; 8) + pix[i + 2]); } var end = new Date().getTime(); var time = end - start; document.getElementById("results").innerHTML = "&lt;span style='color:Green;'&gt;" + "Success: Your browser supports CORS for cross domain images in Canvas &lt;br&gt;"+ "Read " + argb.length+ " pixels in "+ time+"ms&lt;/span&gt;"; } catch (ex) { document.getElementById("results").innerHTML = "&lt;span style='color:Red;'&gt;Failed: " + ex + "&lt;/span&gt;"; } } } &lt;/script&gt; &lt;/head&gt; &lt;body onload="initialize()"&gt; &lt;h2&gt;Canvas Cross Origin Image Test: Testing for Canvas Cross Domain Image CORS Support&lt;/h2&gt; &lt;h2&gt;&lt;a href="http://blog.chromium.org/2011/07/using-cross-domain-images-in-webgl-and.html"&gt;What is CORS Image Security?&lt;/a&gt;&lt;/h2&gt; &lt;h1 id="results" style="color:Orange;"&gt;Testing...&lt;/h1&gt; &lt;canvas id="mycanvas"&gt;&lt;/canvas&gt; &lt;br /&gt; &lt;a href="/Example/List"&gt;More Examples&lt;/a&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. POBrowser Canvas CORS Support for Cross Domain Loaded Image Manipulation
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    1. COI was just about to post a question about this. Glad I'm not the only one going crazy thinking this *should* work. This now works in FF17, but still doesn't work in IE10. Guess I'll have to keep using a proxy for my requests.
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    2. COUpdate 1.5 years later: On Windows I just tested IE9 (fail), Safari 5.0.5 (fail), Firefox (pass) and Chrome (pass)
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    3. COChecked the demo page on an iPad 3 in safari and it worked.
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