Scan your iPhoto, Photo Booth, and Photos Libraries for duplicates by adding them from the icons on the bottom left (*please remember to close Photos/iPhoto applications when scanning). Just drag & drop any folder to find all your duplicates. Renaming a file does not change the file contents, so Duplicate File Cleaner will still find all duplicates even if they are named differently. Only TRUE and EXACT duplicates with the same hash value. Duplicate Photo Cleaner does not remove similar photos. So if the contents of the file are changed in anyway, then it is no longer a legitimate duplicate since the hash values are different. This means that it finds all duplicate photos by looking at the actual HASH value.
We use a true SHA-1 checksum file compare to ACCURATELY find legitimate duplicates.
