tests/testimgs/img.png.base64

set imgdata \
{iVBORw0KGgoAAAANSUhEUgAAACgAAAAHCAYAAAENAz8YAAAAe0lEQVQ4jc2RMQ7AIAwDz/3/
n90haRQoA5UY6gGBOSUOyGAZwFgghAwWJnwBDhNAzsV5l5AEdoIFReUsEhAEeLGpal3thw11
W3HaQc2zA9zu/DlhD9Xnn0INUfubPDqe8P8Fh1/u5pKctbL09lamFlz/i0fHJz6t3we8AU6R
PP0Hl9TRAAAAAElFTkSuQmCC}