Best fast free duplicate file finder for your Mac. Remove duplicate files on any mounted disk or folder.
Use FREE, find and remove duplicate files. Get PRO to remove duplicate folders and merge similar folders!
Get rid of duplicate files just in 3 steps:
Scan a disk or folder for duplicates -> Select duplicates -> Review & Remove duplicates.

Within a few minutes Duplicate File Finder will give a report with all the duplicate files by category: pictures, videos, music, archives, documents, and all other specific extensions. It's really easy to see how much space each file takes.
This easy duplicate finder allows you to scan as many folders as you wish. All you need to do is to drag and drop the folders or disks into the app, and click the Scan button.

Best Duplicate File Finder Features:

▸ fast scanning algorithm
▸ ability to scan for duplicates in multiple folders or drives
▸ 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 speedy scan

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

▸ built-in duplicates search
▸ preview & quick look any duplicate file
▸ sort duplicates: by name, size, total size, type, and duplicates count

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

▸ confirmation list of files being removed
▸ customizable view of confirmation list
▸ option to move to Trash or permanent removal
▸ duplicates removal history
▸ ability to restore removed duplicates

Duplicate File Finder FREE 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 the Autoselect command
• Preview similar folders - the folders with duplicate and unique files
• Preview log of duplicates removed
• Review selected duplicates before removal
• Remove duplicate files permanently or move them to Trash
• Get guaranteed response to your ticket at within one business day

PRO Duplicate File Finder gives you even more features, you can:
• Find duplicates in hidden folders
• Use “Select Duplicates in Folder” option
• Remove duplicate folders
• Remove duplicate files in Similar folders
• Merge Similar folders
• Restore removed duplicates

If you have any questions about the app, contact us at

*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 Upgrade to PRO required to enable PRO features.

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

What's New

Version 5.3

Duplicate File Finder is improved and optimized for macOS High Sierra.
New features to find, remove and manage duplicate files and folders added:
• New powerful feature to select duplicates in bulk - "Select Duplicates in Folder" added
• Autoselect duplicate files improved
• "Select Duplicates in" and "Keep Files in" improved
• Hint with selected duplicate files information added
• Smart Cleanup hints for duplicates available in FREE mode
• Duplicate folders' content preview added
• Merge Similar Folders feature added
• History of removal feature added
• Restore deleted files feature added
• Option to remove duplicates permanently or to Trash added
• Improved and extended removal confirmation dialog
• Improved scanning speed to find duplicates even more quicker

What's New v. 5.3
• Increased duplicates search speed
• New hints added in the “Select duplicates in folders” dialog

Ratings and Reviews

4.7 out of 5

1.1K Ratings

1.1K Ratings

Fast, Elegant Design and Worth the Upgrade


DFF has been wonderful in helping me to remove duplicate files after migrating three portable hard drives onto one large disk. It saved me 415GB of file space out of the original 1.9GB. I removed thousands of duplicates within less than a day after years of copying files from one drive to another to create redundant copies.

The duplicate folders and similar folders features are well worth the upgrade to remove multiple copies of directories at once, instead of removing each file seperately. This saved me a great deal of time as I had multiple copies of photo directories.

The interface is fast and elegant. DFF took about an hour or two to analyze hundreds of thousands of files (1.9GB). It neatly organized them so one could remove duplicate folders, remove duplicate files in similar folders, and leave the unique files behind. All other files can be removed one at a time, and “Auto-Select” saves time clicking on which version you would like to remove. The application also safeguards you from removing all copies of a single file or directory by forcing you to enable that function and warns you politely before marking all copies for removal, if you chose to do so manually.

Thank you for this wonderful application!

I’m so glad I found this!


I almost bought a similar service online for $40 (additional $20 to scan folders and similar files, which this does). This app is only $5 for the upgrade to delete files and it is awesome! SO worth the price. And way faster! I just did the scan only (free) with the other service, and it took several minutes. This app takes seconds to find, and then to delete files after you tell it to.
The interface is also really great, and it’s easy to use.
There were a few files that it wouldn’t delete at first, because they were on a “never select” setting in the app, which I changed and then deleted ALL duplicates.
I’m surprised that I had up to 6 (maybe more) duplicates of some things! I just saved so much space. Happy!

Cannot delete some things, but still great.


I used this program to help me clean up a bunch of hard drives from dead computers I have had for over 15 years.
Im rough on my Macs, so when it dies I just get a new one and start fresh, carrying over only what I need. This left me with a bunch of drives filled with videos and pics and music and important docs and a WHOLE LOT OF JUNK.
And this software was terrific at sorting it all out. I used a cheapie USB 2 to SATA adapter for the drives.
It would be 5 stars but for a minor quibble, and that is probably an Apple security issue rather than a problem with the app. I couldn’t change ownership of some of the old files and as a result, some duplicate files could be found, but not deleted, by the app. Thankfully, most of the time there is a way to immediately open a finder window to see the files, and you can just trash them manually after confirming an ADMIN password, and even if the button for opening the finder window doesn’t show up ( sometimes it didn’t for some reason) you can just follow the path and get rid of things that way.

An excellent app. Saved me hours and days.


Sergiy Savenko
17.5 MB
Age Rating
Rated 4+
© Nektony. Duplicate File Finder.


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