Lightroom imports often create duplicates if you import from an SD card, then import again from a backup folder. The portable scanner finds duplicate RAW (.CR2, .NEF) files without mixing up thumbnails.
Use the "Pencil" button (bulk selection) to keep files based on specific criteria, such as "Keep files from this folder". Delete/Move: easy duplicate finder portable
This article explores why the portable version of this utility is a game-changer, how to use it effectively, and why it outperforms standard installed software. Lightroom imports often create duplicates if you import