What is Exiv2?
The Exiv2 library provides cross-platform functionality for handling image metadata. The Exif, IPTC, and XMP metadata and ICC Profiles embedded within digital images in various formats are accessible via this application. As free software, Exiv2 is included in many projects, such as the KDE and GNOME desktops and a wide variety of applications, such as GIMP and DarkTable.
Exiv JXL support
The release of Exiv2 v0.27.4 happened on June 15th, 2021. All BMF formats, including AVIF, JXL, and HEIF, are supported.