ExifTool Key Viewer
Reading and writing of metadata in PhotoLinker is done using Phil Harvey's open source ExifTool [queensu.ca]. ExifTool is a command-line application and perl library that supports many different types of metadata including EXIF, IPTC and XMP. The metadata key-value pairs returned by ExifTool are mapped in many-to-one relationships to tags found in PhotoLinker's metadata editor using the rules established by the Metadata Working Group.
PhotoLinker provides an ExifTool Key Viewer which shows all raw key-value pairs read from the photo and sidecar files as well as the proposed changes to be written back to the files.
To show the ExifTool Key Viewer:
- Select Photos > Show ExifTool Key Viewer
- Set the Metadata Source popup to either Image, Sidecar or iPhoto.
- Set the State popup to 'Saved Values' to examine the current saved state of the image or 'Proposed Changes' to view the keys to be set.
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