Вот кпримеру нашел:
http://torry.net/vcl/graphics/packs/ImageFileLib.zip
With this library, Delphi programs can read and write JPEG 2000, PNG, ICO, CUR and PCX images. RAS, PNM, PGM, PPM, HIPS images can be loaded, but not created. Both lossy and lossless coding of JPEG 2000 images are supported. In addition to the icons supported by TIcon in Delphi, this library also supports 24 bit and 256 color palette icons and cursors.