<html>
<body>
<p><b>Note: </b>Internet Explorer and Safari do not support SVG filters yet!</p>
<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
<defs>
<filter id="f1" x="0" y="0">
<fegaussianblur in="SourceGraphic" stddeviation="15"></fegaussianblur>
</filter>
</defs>
<rect width="90" height="90" stroke="green" stroke-width="3" fill="yellow" filter="url(#f1)"></rect>
</svg>
</body>
</html>