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Duplicate File Finder - best fast free for files

By Nektony

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Free duplicate file finder for Mac*. Switch to PRO to find duplicate folders and even similar folders!
Duplicate File Finder is a free app that finds duplicate files on your Mac in just 3 clicks.

Drag & drop as many folders as you wish and click SCAN.

Within a minute the app will give a report with all duplicate files by categories: images, videos, music, archives, documents, and all other specific extensions. It's really easy to see how much space each file takes.


- fast scanning algorithm
- scanning for duplicates in multiple folders or drives
- external drives & mounted network folders support
- "Recent Folders List" for scanned folders
- animated scanning process
- skip list for various files & folders

- visual chart report when scanning
- duplicate files list
- duplicate files by types

- built-in duplicates search
- preview & quick look for every file
- sort duplicates (by name, size, total size, type, and duplicates count)

- visual progress bar of selected files for removal
- one-click selection of multiple duplicate files
- smart duplicates autoselection
- "always select" & "never select" autoselect options
- confirmation list of deleted files
- moving to Trash or permanent removal option

Duplicate File Finder FREE features:
• Find duplicate files and folders
• Find duplicates in multiple folders in one session
• Find duplicates in any folder, disk, mounted folder or storage
• Add files, folders and specified files extensions to Skip list 
• Tune minimal duplicate file size for better duplicate finding performance
• Preview a visual report of found duplicates
• Review duplicate files by types
• Preview duplicate folders
• Preview any duplicate file with built-in Preview option
• Get detailed information about any duplicate
• Use Autoselect for quick duplicates selection and removal
• Customize Autoselect option
• Preview similar folders - the folders with duplicate and unique files
• Preview log of removed duplicates
• Review selected duplicates before removal
• Remove duplicate files permanently or move them to the Trash
• Get guaranteed response to your ticket at within 1 business day

Duplicate File Finder PRO features:
• Use cleanup hints
• Find duplicates in hidden folders
• Remove duplicate folders and the duplicate files in Similar folders

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

* Application is free - it allows you to find & remove duplicate files in any folder or storage connected to your Mac.
In-app purchase Upgrade to PRO required to:
- find duplicates in hidden folders
- remove duplicate folders and duplicates in Similar folders
- Autoselect duplicate folders.
All other features are available without in-app purchase.

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 in Version 4.2

Auto select duplicate files improved.
Duplicate files scanning speed improved on Mac OS X.
Buil-in Help documentation updated.


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Customer Reviews

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!

Good App but the nagging is tiresome!

I have quite a few pieces of software to find duplicates. Some work, some don’t, especially with Photos and an external drive with a complicated hierarchy of folders. Duplicate File Finder seems to be working nicely but I barely launched it before it began nagging me to buy MORE of their software. I PAID for this software and I can’t use it without suffering through commercials? That is enough to make me delete the software but I’m hoping this will stop the nagging.
I can’t comfortably recommend this software without being give time to use it but based on one scan of my home folder, it worked quickly and found many files to delete..

My gosh this app is great, blows away the competition!

This app is incredibly incredibly fast…I ran it against several other well-reviewed competitors and it just blew them out of the water, scanning two terabytes of photos, files and movies, it found everything in seconds while the best of the other lot was still working on it after several minutes. Pretty remarkable actually. Also, it’s sorting capabilities for reviewing duplicates is next to none. Great user interface, clear concise and thorough, leaving mystery out of the equation. The developer’s “Menu Cleaner X” is superb also.

Duplicate File Finder - best fast free for files
View in Mac App Store
  • Free
  • Category: Utilities
  • Updated:
  • Version: 4.2
  • Size: 13.1 MB
  • Language: English
  • Seller:

Compatibility: OS X 10.9 or later, 64-bit processor

Customer Ratings

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Top In-App Purchases

  1. Upgrade to Pro$4.99