What metadata format should I use in JPEGs for personal photo information: XMP, IPTC, or EXIF?
Asked 4/20/2013
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2 answers
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I add metadata such as GPS coordinates, location/country, my name, website URL, and occasional descriptions to personal JPEG photos. I mainly use Linux and open-source tools, and currently write metadata with exiftool. I want good compatibility and quality, but I’d rather avoid duplicating the same information across multiple metadata standards if possible.
What is the best place to store this information in JPEG files? Should I use XMP, IPTC, or EXIF for these fields? Also, for photos where I only know the year or month/year rather than a full date, what is the best approach?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
13y ago
2 Answers
4
Because databases or sidecar files could get separated, I prefer to put the info right in the JPEGs, which is easily done with exiftool. I use XMP because it's the most flexible and modern.
As a bonus, this is what the fast and versatile image viewer/catalogger geeqie uses, so it's easy to view and edit tags, titles, and descriptions that way.
Originally by user1943. Source · Licensed CC BY-SA 4.0
user1943
13y ago
0
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For JPEGs you want to keep self-contained, storing the metadata in the file itself is a good approach. Based on the answers, XMP is the best fit here: it’s modern, flexible, and works well with tools like exiftool and Geeqie.
If avoiding duplication is important to you, prefer XMP as your main metadata store rather than writing the same fields into multiple standards. EXIF is mainly oriented toward camera-generated technical metadata, while XMP is better suited for descriptive information like titles, descriptions, authorship, location details, and tags.
Embedding metadata in the JPEG is also more reliable than depending on a separate database or sidecar file, since those can become separated from the image.
For partial dates, XMP is again the better choice because it can represent incomplete dates more flexibly than traditional EXIF date fields.
So, a sensible workflow is:
- embed metadata directly in the JPEG
- use XMP as the primary metadata format
- avoid duplicating the same data into IPTC/EXIF unless you specifically need compatibility with software that requires it
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