Are there any free software that clean up iPhoto?

http://ift.tt/1iZHv9S

This question isn’t for the Windows desktop I am working on, but for my MacBook Pro that I use while on the go.

My iPhoto folder is horribly bloated, with almost 47 GB used up just there. I edit a lot of pictures for a living and have a ton of duplicates. Found an article on the web that talks about how a software program can specifically clean up just the iPhotos folder, but wasn’t sure about it.

Anybody have any experience with it? That software is paid. Are there any free ways to clean up iPhoto?

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