Duplicate Annihilator searches your iPhoto library for duplicate images and either marks or moves them to iPhotos trashcan. Nowdays iPhoto protects you from importing duplicates but you may have managed to do so anyway.

Duplicate Annihilator takes on the time consuming task comparing the images in your iPhoto library using effective algorithms to make sure that no duplicates escapes. When found the duplicate will either be marked with a description of your choice to make it searchable or simply moved to iPhotos trashcan.

Duplicate Annihilator works it way backwards from the end of your iPhoto library to the beginning in order to make sure that the newest copy of the image is to be spared.

Features:

• Easily find and annihilate duplicates created internally by iPhoto or during import.
• Compare images using different algorithms to detect and understand differences.
• Detect duplicates using effective algorithms using electronic checksums like MD5.
• Detect duplicates by using file specific meta data such as filename, dimensions, filesize, Exif creation date or date of creation.
• Delete duplicates upon detection or mark them with a keyword to make them easily found using iPhoto features like search or smart folders.
• Makes your iPhoto slimmer and faster.
• Only uses standard Apple features and API's. No hacking nor tampering with iPhoto system files.

Duplicate Annihilator - Aperture Edition is available at author's site.

Requirements:
OS X 10.4+
iPhoto 5+

Intel Required