FAQs

Tidy Up doesn't delete the items. It removes them. This means that the items will be moved to the Trash. If you need to free up some space, then you should empty the Trash. Be aware, though, that Tidy Up is able to restore the removed items only if they are still in the Trash. For this reason, a backup of the items to delete is always suggested.

The first search you should do is the "Content only" in Basic Mode. If, after removing the items found through this search, you still see duplicates, you should try using a search with EXIF metadata only (Date taken, camera make and model, etc...).

The message "Tidy Up is damaged" appears due to the new Gatekeeper feature of OSX 10.8.
If you are using OS X 10.8 or later, be sure that the at least  "Mac App Store and identified developer"  (or "Anywhere") radio button is chosen. If you still have trouble download it again.

Aperture has a system that doesn't allow any third part application to remove items from its library. For this reason, when you try to remove photos in Aperture through Tidy Up, the application will assign to those photos one of the following four tags: Duplicate_Version_to_trash, Duplicate_Version_to_move, Duplicate_Master_to_trash, Duplicate_Master_to_move. This way you'll be able to create a smart album containing all the tagged images and easily remove them.