I like keeping things tidy, both in my home and on my computers. A cluttered and unorganised life is undesirable. Even though I have good control of most aspects I still found duplicate files on my Mac while running a quick check using Gemini II from MacPaw.
So after a scan of duplicate files on my already pretty clean Mac the first result is this:
Even though I run a tight system it still found 9,49GB of data that potentially could be removed. 1,33GB was automatically selected. Control freak as I am I want to see what happens when using third party software so I clicked the Review Results and got this:
As you can see in the screenshot above it found two video file on two places. The photo library and in a local folder. In this case Gemini II automatically selected the local copy to delete and keep the file in the photo library. Normally this is probably fine, but in this case I want to keep the local file instead and delete the one in the photo library.
You can check out and download Gemini II here: The stellar duplicate finder. Locates and removes identical and similar files on your Mac.
The software also have a section where it checks for similar files. It could be a series of similar photos for example that is not an exact match, but I would advise to you to be cautious when deleting similar files. It is always wise to have a recent backup before deleting files on your system.
If you need to clean out your Mac even more check out 9 Ways To Free Up Space And Clean Macs. Where you have free options and paid options available to your disposal.