Exiv2 Overview

Exiv2 comprises of a C++ library and a command line utility to access image metadata. Exiv2 is free software. The homepage of Exiv2 is at http://www.exiv2.org/.

The Exiv2 library provides

• fast read and write access to the Exif, IPTC and XMP metadata of an image through Exiv2 keys and standard C++ iterators
• conversion of Exif and IPTC metadata to and from XMP
• a smart IPTC implementation that does not affect data that programs like Photoshop store in the same image segment
• Exif MakerNote support:
  • MakerNote tags can be accessed just like any other Exif metadata
  • a sophisticated write algorithm avoids corrupting the MakerNote
• extract and delete methods for Exif thumbnails (both, JPEG and TIFF thumbnails)
• set methods for Exif thumbnails (JPEG only, TIFF thumbnails can be set from individual tags)
• an easy to use and well documented API

Getting started

A few pointers to get you started with the Exiv2 library without delay.

Metadata reference tables

Exif and MakerNote tags

• Standard Exif tags
• Canon MakerNote tags
• Fujifilm MakerNote tags
• Minolta MakerNote tags
• Nikon MakerNote tags
• Olympus MakerNote tags
• Panasonic MakerNote tags
• Pentax MakerNote tags
• Samsung MakerNote tags
• Sigma/Foveon MakerNote tags
• Sony MakerNote tags

IPTC datasets

• IPTC datasets

XMP properties

• dc schema
• xmp schema
• xmpRights schema
• xmpMM schema
• xmpBJ schema
• xmpTPg schema
• xmpDM schema
• pdf schema
• photoshop schema
• crs schema
• tiff schema
• exif schema
• exifEX schema
• aux schema
• Iptc4xmpCore schema
• Iptc4xmpExt schema
• PLUS schema
• Metadata Working Group Regions schema
• Metadata Working Group Hierarchical Keywords schema
• Darwin Core schema
• Dublin Core Terms schema
• digiKam schema
• KDE Image Program Interface schema
• GPano schema
• lightroom schema
• Microsoft Photo 1.2 schema
• Microsoft Photo RegionInfo schema
• Microsoft Photo Region schema
• acdsee
• iView Media Pro schema
• Microsoft Expression Media schema
• MicrosoftPhoto schema

File Formats

See the list of supported image formats in the Wiki and the Canon CRW mapping.

Support

All project resources are accessible from the project website.

Please send feedback or queries to the Exiv2 forum. For new bug reports and feature requests, please open an issue.

License

Exiv2 is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

Alternatively, Exiv2 is also available with a commercial license, which allows it to be used in closed-source projects. Contact me for more information.

Exiv2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.