best way to find duplicates

iPhoto Library Manager - http://www.fatcatsoftware.com/iplm/ -

BUT

It is unlikely that duplicates in iPhoto are an issue - you probably need ot add an external drive and run iPhoto on it --

Moving the iPhoto library is safe and simple - quit iPhoto and drag the iPhoto library intact as a single entity to the external drive - depress the option key and launch iPhoto using the "select library" option to point to the new location on the external drive - fully test it and then trash the old library on the internal drive (test one more time prior to emptying the trash)

And be sure that the External drive is formatted Mac OS extended (journaled) (iPhoto does not work with drives with other formats) and that it is always available prior to launching iPhoto

And backup soon and often - having your iPhoto library on an external drive is not a backup and if you are using Time Machine you need to check and be sure that TM is backing up your external drive

AND

Do not ever use programs like MacKeeper or CleanMyMac2 or similer - they are not needed and are likely to damage iPhoto ro your entire lMac

LN

yes

iPhoto Library Manager - http://www.fatcatsoftware.com/iplm/ -

LN

You can use one of these applications to identify and remove duplicate photos from an iPhoto Library:

iPhoto Library Manager - $29.95

Duplicate Cleaner for iPhoto - free

Duplicate Annihilator - $7.95 - only app able to detect duplicate thumbnail files or faces files when an iPhoto 8 or earlier library has been imported into another.

PhotoSweeper - $9.95 - This app can search by comparing the image's bitmaps or histograms thus finding duplicate images with different file names and dates.

DeCloner - $19.95 - can find dupicates in iPhoto Libraries or in folders on the HD.

OT

Thanks for this post, solved my problem!