What's the best duplicate file finder for Mac?

You can create a Smart Folder in Finder to help you sort files by file type or size, which might make it easier to find the duplicates.

• Open Finder and select File > New Smart Folder.
• Click on + to add search criteria such as Kind, Name, or File Size.
• Review the files and manually check for duplicates.

I feel your pain on the whole duplicate files situation—it can really clutter up your space! I don't use a Mac myself, but I've helped friends handle this exact problem before, and I've heard a lot about what works well. From what I gather, TunesBro CleanGeeker is a standout favorite for many Mac users, it's also a best duplicate file finder. It's pretty user-friendly, and it visually shows you what's been found so you can decide what to delete and what to keep. It also has a safety feature that ensures you don't delete anything important by mistake, which can be super helpful.

Another one that comes up a lot is DupeGuru. It's a bit more on the technical side, but it's great because it works not just on Macs but on Windows and Linux too. This might not matter much if you're all-in on Apple, but it's nice to have options. DupeGuru is also open source, so if you're into that kind of thing, it's a plus.

Lastly, many users like the simplicity of CCleaner, which is known more for general cleaning but also includes a decent duplicate finder. It's not as robust as Gemini 2 or DupeGuru, but for a quick clean-up, it does the trick.

In fact, the built-in Terminal app can be acted as a good duplicate file finder on Mac.You can use the following commands in Terminal to find and remove duplicate files on your Mac:

1. First, open Terminal from Applications > Utilities > Terminal.

2. To find duplicate files, run the following command:

find . -type f ! -empty -exec cksum {} + | sort | tee /tmp/f.tmp | cut -d ' ' -f 1,2 | uniq -d | grep -hif - /tmp/f.tmp

3. This command will list all the duplicate files and their locations in the terminal window.

4. If you want to remove the duplicate files, you can use the following command:

find . -type f ! -empty -exec cksum {} + | sort | tee /tmp/f.tmp | cut -d ' ' -f 1,2 | uniq -d | grep -hif - /tmp/f.tmp | cut -d ' ' -f 3-999 | xargs rm

This command will delete all the duplicate files.

Note: Please be cautious when using the rm command as you could potentially delete important files. Make sure to review the list of duplicate files before running the command to remove them.