Get more free disk space by removing unnecessary duplicate files and folders from your Mac. Remove duplicate files on any mounted disk or folder.
Use Duplicate File Finder FREE to find and remove duplicate files. Get the PRO version to delete duplicate folders, merge similar folders, mass select duplicates and more.

Get rid of duplicate files just in 3 steps:
Scan a disk or folder for duplicates -> Select duplicates -> Review and Remove duplicates.

In a few minutes, Duplicate File Finder will provide you with a report of all the duplicate files by their categories: pictures, videos, music, archives, documents, and any other specific extensions. It has never been easier to see how much space each file takes.
With Duplicate File Finder Finder, you can scan as many folders as you wish. All you need to do is Drag and Drop the folders or disks into the app and click the Scan button.

List of the best Duplicate File Finder features:

▸ fast scanning algorithm
▸ ability to scan for duplicates in multiple folders and drives simultaneously
▸ support for external drives and mounted network folders
▸ "Recent Folders List" for scanned folders
▸ animated scanning process
▸ skip list for various files and folders
▸ "minimal file size" option for a faster scan

▸ visual chart report when scanning
▸ duplicate files list
▸ duplicate files by type

▸ built-in duplicates search
▸ preview duplicate files with Quick Look
▸ sort duplicates: by name, size, date, total size, type, duplicates count

▸ one-click selection of multiple duplicate files
▸ "always select" and "never select" auto-select rules
▸ smart duplicate auto-selection
▸ option to mass select duplicates in particular folders using “Select Duplicates in Folder” feature
▸ reverse selection with "Keep files..."
▸ visual progress bar of the selected duplicates

▸ confirmation list of files being removed
▸ customizable view of confirmation list
▸ customizable removal options: move to directly Trash, remove completely, or move to a specific folder
▸ history of removed duplicates
▸ ability to restore removed duplicates

Duplicate File Finder FREE application allows you to:
• Find duplicate files and folders
• Find duplicates in multiple disks and folders in one session
• Find duplicates in any folder, disk, mounted folder or storage
• Add files, folders and specified files extensions to Skip List
• Specify minimal duplicate file size for better duplicate-finding performance
• Preview a visual report of duplicates found
• Review duplicate files by types
• Preview duplicate folders
• Preview any duplicate file with built-in Preview option
• Get detailed information about any duplicate
• Use cleanup hints for fast duplicate removal
• Use Autoselect for quick duplicate files selection and removal
• Customize Autoselect preferences
• Preview similar folders - the folders with duplicate and unique files
• Preview history of removed duplicate files
• Review selected duplicates before removal
• Delete duplicate files or move them to Trash
• Get a swift response to your support tickets at within one business day

The PRO version of Duplicate File Finder provides you with even more features:
• Use the “Select Duplicates in Folder” feature to select duplicates in bulk
• Remove duplicate folders
• Remove duplicate files in Similar folders
• Merge folders
• Move selected duplicates to a specific folder
• Restore removed duplicates

*The application is free, it allows you to find and remove duplicate files in any folder or storage connected to your Mac.
In-app purchase of 'Upgrade to PRO' within the software is required to enable the PRO features.

NOTE: If you have any comments, general or technical issues, contact us directly at and we will respond to you within one business day.

What’s New

Version 6.5

• Added searching in Photos library on external disks
• Improved processing with a huge number of duplicates
• Improved searching for Similar photos
• Improved merging folders
• Improved searching for the Photos Library
• Improved customization for auto select rules
• Improved removal duplicates in specified folder

Ratings and Reviews

4.7 out of 5
1.8K Ratings

1.8K Ratings

seattle103 ,

Very very helpful. You will crave more.

Bottom line - use this app. It is great. Once you use it, you may find something you wish it could do to make your elimination of duplicates easier.

So, I think there could be an easier way to do some tasks if I could sort the duplicates by file. For example, I compared my download file (which really bloated on me) to my Google Drive. The results showd me all the individual file and folder duplicates within the Google Drive itself, within the download folder and betweeen GD and Downloads. But, what I really want is to see what duplicates are just in the download folder that I have already saved to various files. Then, I can eliminate those download files and folders, allowing me to then properly save or delete the balance of downloads. We receive so many attachments or web content that goes to downloads. Plus, when using google docs, office 365 online and other shared online toos, we have to upload, download files that often travel through Downloads folder. Maybe I am missing some buried feature here - but it seemed to me that sorting the duplicates by folder might get me what I want - a global list of duplicates in the Download folder compared to the global list of drives and folders I want to compare them to.

bob162000 ,


I dropped a Raid array on it with about 1.1 million files, and it completed indexing in a reasonable amount of time (15 minutes or so). I have folders and files in one area, and then 'backup' folders of the files, but older and not in sync. Using the app 'Similar', it displayed the two folders. Example: REACH folder in two places. The dialog shows the path to each folder and duplicate and unique files. So... I want to merge the two, delete the duplicates, move the unique files, and then delete the 'source' folder. Nope. And, in the merge CONFIRM spec there is no path info, so I'm not sure which folder is which. It also seems to REVERSE the folder display from the original merge spec. Confusing. I also found I needed to display both folders first so I could manually delete the source folder, which is SLOW at best. It can't be done from the 'Similar' action because once the merge happens it indexes to the next 'similar' folder. I believe the app could be tweaked to do what I want, but for now it's a deal breaker. Of course, maybe it can do that now and I just couldn't find it. The merge options dialog doesn't offer what I want as far as I could tell from experimenting.

Developer Response ,

Hi Bob,
Thank you for the feedback.

Now we are finishing the next update with dramatically updated Merge Folders feature. The update will be available at App Store in 6 weeks.

Contact us via if you are interested to get the beta of update earlier.
P.S. All your comments are accepted, and new Merge provides better experience, really close to the thing you asked.
Duplicate File Finder Support Team.

SurfGreen22 ,

AVOID! This software will delete NON-Duplicate files!!

I can't even begin to describe how dissapointed I am with this software! I have had this software delete NON-DUPLICATE files multiple times now, and this is while using the slower full scale option. This should be totally impossible since the developers claim the program is doing a byte by byte comparsion. I am doing a huge archival process of many harddrives and have been using this program throughout - looking back at other copies of the data I have found it deleted a series of photos that were taken in a row on a tripod, but had different files names. They were similar but NOT the same and it marked them all as duplicates and were for deleted. I also had it delete audio outputs from protools - the files were output at the same time and the same size but had diffferent audio tracks on them and it marked them as duplicates. If it was doing a real full scale scan it would not have made this mistake. Bottom line is if you are using this for photos or audio you CAN NOT TRUST this software to safely clean your computer.

Developer Response ,

The application compares files by their content byte to byte. There is a double-check for duplicates when files removed.
Please contact us at to check your files. Lora


Nektony Limited
13.2 MB

macOS 10.12 or later, 64-bit processor



Age Rating
In-App Purchases
  1. Upgrade to PRO $9.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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