greyscale-na-png.png, rgb-png.png, Xmp-exif-multilingual_test.jpg
greyscale-png.png, 1bit-png.png, Png-native-test.png, rgb-na-png.png,
test.tiff, test.jpg, jpeg-comment-multiple.jpg, jpeg-comment-utf.jpg,
-jpeg-comment-iso8859-1.jpg, jpeg-comment-binary.jpg
+jpeg-comment-iso8859-1.jpg, jpeg-comment-binary.jpg, jpeg-xmp-psir.jpg,
+jpeg-xmp-alt.jpg, animated.gif, exif-user-comment.jpg, animated-xmp.gif,
+iptc-timetest-invalid.jpg, jpeg-iptc-bad-hash.jpg, iptc-timetest.jpg,
+xmp.png, nonanimated.gif, exif-gps.jpg, jpeg-xmp-psir.xmp, jpeg-iptc-good-hash.jpg
Are all by Bawolff. I don't think they contain enough originality to
claim copyright, but on the off chance they do, feel free to use them
however you feel fit, without restriction.