/home/mhenkel/full.png:       PNG image data, 240 x 294, 8-bit/color RGB, non-interlaced
/home/mhenkel/tn_100x75.png:  PNG image data, 100 x 75, 16-bit/color RGB, non-interlaced
/home/mhenkel/tn_200x150.png: PNG image data, 200 x 150, 16-bit/color RGB, non-interlaced