This tool also manages a database, 'the catalog'. Keywords are metadata like any other, but XnViewMP has a specific tool called 'Categories' to ease their management. The 'JPG' image format and some others pictures formats support metadata embedded in the image file itself.īut other formats only support certain kinds of metadata, for example ( Most of ) the 'raw' formats only support external XMP metadata, put in a companion file next to the image file. The XMP standard is tending to replace IPTC, but one can continue to use these two families simultaneously. You can add a lot of information to describe, qualify, or organize and sort the photos, in IPTC or XMP metadata.

The EXIF metadata are now reserved for technical information, it is logical not to modify them except for the dates and GPS coordinates which can be created or modified if necessary, using the menu 'Tools, Change timestamp' or 'Tools, Metadata, Edit GPS data'. There are basically three families, from the oldest to the most recent: EXIF, IPTC, XMP.

Metadata can be added to photos to facilitate their management. This is a translation of a french version : viewtopic.php?p=170164#p170164

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