PngSuite - Corrupted files / GIF-files

xs1n0g01 - signature byte 1 MSBit reset to zero     xs2n0g01 - signature byte 2 is a 'Q'     xs4n0g01 - signature byte 4 lowercase     xs7n0g01 - 7th byte a space instead of control-Z     xcrn0g04 - added cr bytes     xlfn0g04 - added lf bytes     xhdn0g08 - incorrect IHDR checksum     xc1n0g08 - color type 1     xc9n2c08 - color type 9     xd0n2c08 - bit-depth 0     xd3n2c08 - bit-depth 3     xd9n2c08 - bit-depth 99     xdtn0g01 - missing IDAT chunk     xcsn0g01 - incorrect IDAT checksum

Willem van Schaik, Calgary, April 2011 http://www.schaik.com/wwwillem.html