3 votes

What's the best software for reading and writing image tags to and from image meta data fields?

Phil Harvey's ExifTool seems to be the perfect choice for such a task. This is the most comprehensive image tag reader (and manipulator), and it has perhaps the most complete catalog of the known tags ...
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2 votes

What's the best software for reading and writing image tags to and from image meta data fields?

ExifTool has been mentioned, another tool for this job is exiv2.
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1 vote

Migrating away from Picasa - "Write faces to XMP" changes the hashes of images

What you'll want to use are XMP sidecar files. These hold XMP data such as image face regions and IPTC Core/Ext data in a file with the same base name and an .xmp extension. They are standard when ...
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1 vote

Migrating away from Picasa - "Write faces to XMP" changes the hashes of images

From your comments I understand you currently have an image library in Picasa, with photos which might become duplicated in the future (due to re-downloading). To ease the deduplication process you ...
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