This utility reads in a BMP, JPEG, TIFF, or PNG files and splits it into "tiles". You can save the tiles as JPEG, 24bit BMP, 8bit BMP's, 8 Bit PNG's, 24 Bit PNG's, 8 Bit TIFF's, or 24 Bit TIFF's. The tiles can be split into 4X4, 8X8, 16X16, 32X32, 64X64, 128X128, 256X256 or User controlled sized rectangle. Bark (download page)