Photos. iPhoto is stuffed with many thousands of photos. If you’re at all like the rest of us then you have another thing in common. Duplicates. Hundreds of duplicate photos which were accidentally loaded into iPhoto. Here’s how to get rid of them.
The problem here is simple enough. We plug in our digital camera or smartphone or even the iPad to the Mac– and iPhoto sucks up whatever photos are still saved on each device.
We know there’s a duplicate photo alert in iPhoto but often we ignore that. You know. Just to be sure.
Even worse, we have near duplicates; photos of the same subject taken one second before or after the photo we want to keep. Don’t even get me started on all the HDR photos from iPhone.
If it looks like a duplicate it’s a duplicate. It needs to be annihilated. That’s what Duplicate Annihilator does. And more. More? Yep. It detects dupes, for sure. But also finds imported thumbnails (which we don’t want or need), detects missing image files, and finds corrupt photos.
Open iPhoto. Open Duplicate Annihilator. Click the Find Duplicates button.
The app uses a number of algorithms to detect differences in photos, whether they were imported as dupes into iPhoto or you made a duplicate within iPhoto.
Duplicate Annihilator has an option to Compare Images, too. Select photos to compare. Click the Compare Selected Images button.
More granular controls are available in the Duplicate Annihilator Preferences button.
That gives you options to control what the app determines to be a duplicate, or merely a similar photo. There are also options to move duplicates to the Trash (and empty Trash), or keep them in iTunes but add a comment.
Duplicate Annihilator isn’t expensive for an app that won’t be used too often (mostly iPhoto housecleaning) but the unregistered version will scan up to 500 photos in iPhoto, which is more than enough to see the value.
There are versions of Duplicate Annihilator for Apple’s Aperture app, and for your iPad or iPhone (which also detects the multiple photos created when using HDR mode).