<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <!-- base64 encoded image: <svg width='100' height='100' xmlns='http://www.w3.org/2000/svg'><rect fill='green' width='100' height='100'></rect></svg> -->
    <image width="100" height="100" xlink:href="data:image/svg+xml;base64,PHN2ZyB3aWR0aD0nMTAwJyBoZWlnaHQ9JzEwMCcgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJz48cmVjdCBmaWxsPSdncmVlbicgd2lkdGg9JzEwMCcgaGVpZ2h0PScxMDAnPjwvcmVjdD48L3N2Zz4="/>
</svg>