How do I delete all duplicate pictures?

[iMore Question]

How to delete all dupilcate pictures

I am trying to reduce my I Cloud storage and seem to have a lot of duplicate pictures on my I Mac .
Is there an easy way to delete all duplicates/

 

[Bigeric23]

Re: How to delete all dupilcate pictures

I think most people use a third-party application. However, you could also do it the old-fashioned way.