I made a random sketchie of a prerart and then redrew it into vector art in Inkscape. After saving it, I realized it saved with a .png extension and I lost the vector information. Drat.
Well, I tried to upload the image today and it was failing to be recognized as a valid image type. So I load it up into GIMP and surprise, it is an SVG file that just had the wrong extension slapped on it.
Little scamp looks like they knew what they were up to.