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Duplicate Cleaner gives you the power to clean up your image library. Using an advanced visual comparison technique, you can find images that have been rotated, flipped, retouched, resized or saved in a different format. You control how exact or loose you want the comparison to be.
The special built-in image browser allows you to view the pictures in the duplicate group side-by-side, for comparison. This will aid in deciding what to keep. You can also display image and camera tags such as size, date taken, and colour depth.
Image comparison is fast, but to really speed up repeated scanning Duplicate Cleaner will store 'fingerprints' of your images. This way if you scan an image archive again, or scan it against a new folder, the cached fingerprint will be used. This will speed things up by over 90%.