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photo-cli processes jpg, jpeg, heic, png, and hif files by default. Because the tool uses the MetadataExtractor .NET library to read EXIF data, you can extend this list to support any image format that MetadataExtractor handles — without recompiling or upgrading photo-cli itself.

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Default supported extensions

Out of the box, photo-cli looks for files with these extensions (matched case-insensitively):
  • jpg
  • jpeg
  • heic
  • png
  • hif
Extension matching is case-insensitive. Files named IMG_1234.JPG and IMG_1234.jpg are both processed.

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Adding extra extensions

Use the settings command to replace the SupportedExtensions value with a comma-separated list of the extensions you need: 
photo-cli settings --key SupportedExtensions --value jpg,jpeg,heic,png,tiff,cr2
The new value takes effect immediately for all subsequent commands. You do not need to restart anything.

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MetadataExtractor compatibility

photo-cli delegates all EXIF reading to the MetadataExtractor .NET library. Any format listed in that library’s supported file types can be enabled by adding the extension to SupportedExtensions.
photo-cli reads EXIF data to determine the taken date and GPS coordinates. Image formats that do not embed EXIF metadata — such as plain PNG exports from design tools — will have neither a date nor location. Those photos are handled according to your --no-taken-date and --no-coordinate settings, and may end up in the configured fallback folders.