Deduplicator is a Adobe Lightroom Classic CC plug-in to deduplicate photos in catalog based on perceptual hashing algorithms.

Download the latest release from GitHub Releases page and unzip it.

File -> Plug-in Manager -> Add -> [Pick deduplicator.lrplugin file]

NOTE: Since Adobe Lightroom Classic CC doesn't copy plug-in files on installation to any safe place, you normally should choose a place your not going to delete plug-in file from. Usually for plugins is used ~/Library/Application\ Support/Adobe/Lightroom/Plugins/ or something like that.

Library -> Plug-in Extras -> Find duplicates

The plugin will start to check all the available images in your catalog this could take a while.

After the process would be completed the Deduplicator will put all the supposed duplicates to Duplicates collection created on top level of collections tree.

NOTE: the plugin takes selection or all photos if <= 1 photo is selected.

Help -> Plug-in Extras -> Check for updates

This will check GitHub if there's a new release and suggest you to check it out.

Deduplicator plug-in relies on imgsum to calculate image perceptual hashes.

• the latest Adobe Lightroom Classic CC version. Minimal requirement is Adobe Lightroom CC 2015/6.0
• Both of macOS and Windows are supported

Image format supported and tested:

• Adobe Digital Negative(*.dng)
• Canon RAW(*.cr2 - only, *.crw is not supported yet)
• Epson RAW(*.erf)
• Hasselblad 3FR(*.3fr)
• JPEG
• Kodak RAW(*.kdc - verified on Kodak DC50, DC120. Easyshare Z1015 RAW files doesn't work)
• Leaf RAW(*.mos - verified on Aptus 22, Aptus 75 doesn't work)
• Nikon RAW(*.nef - only, *.nrw is not supported yet)
• TIFF
• Sony RAW(*.arw, *.sr2) - Experimental at the moment

Feel free to create a pull request via GitHub interface ;)

Please feel free to create a GitHub issue