ExifTool is a Perl module with an included command-line application for
reading and writing meta information in image, audio, and video files.
It reads EXIF, GPS, IPTC, XMP, JFIF, GeoTIFF, ICC Profile, Photoshop IRB,
FlashPix, AFCP, and ID3 meta information from JPG, JP2, TIFF, GIF, PNG, MNG,
JNG, MIFF, EPS, PS, AI, PDF, PSD, BMP, THM, CRW, CR2, MRW, NEF, PEF, ORF and
DNG images. ExifTool also extracts information from the maker notes of many
digital cameras by various manufacturers including Canon, Casio, FujiFilm,
HP, JVC/Victor, Kodak, Leaf, Minolta/Konica-Minolta, Nikon, Olympus/Epson,
Panasonic/Leica, Pentax/Asahi, Ricoh, Sanyo, Sigma/Foveon, and Sony.