C++ metadata library and tools
Exif, IPTC & XMP metadata and ICC Profile
Exiv2 is a Cross-platform C++ library
and a command line utility
to manage image metadata. It provides fast and easy read and write access to the Exif, IPTC and XMP metadata and the ICC Profile
embedded within digital images in various formats.
Exiv2 is available as free software and is used in many projects
including KDE and Gnome Desktops as well as many applications including GIMP, darktable, shotwell, GwenView and Luminance HDR.