<html>
<head>
    <meta charset="utf-8">
</head>
<body>
    <script>
        var canvas = document.createElement('canvas');
        var ctx = canvas.getContext('2d');

        var data = '<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200">' +
                '<foreignObject width="100%" height="100%">' +
                '<div xmlns="http://www.w3.org/1999/xhtml" style="font-size:40px">' +
                    '<em>I</em> like' +
                    '<span style="color:white; text-shadow:0 0 2px blue;">' +
                    'cheese</span>' +
                '</div>' +
                '</foreignObject>' +
                '</svg>';

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        img.onload = function () {
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            DOMURL.revokeObjectURL(url);
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        img.src = url;
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</body>
</html>