Duplicate File Finder
Duplicate File Finder is a Nektony utility for macOS that scans folders, libraries, and drives for duplicate files, folders, and similar photos.
What is Duplicate File Finder?
Duplicate File Finder is a macOS cleanup and organization utility published by Nektony LLC. It is designed to scan selected folders, whole drives, photo libraries, and some cloud-synced locations to identify duplicate files and related storage clutter. The app can group exact duplicate files by type, detect duplicate folders, and in current product materials Nektony also documents support for finding similar photos and comparing or merging similar folders. On modern macOS versions, users may encounter permission prompts for folders, Photos access, or broader disk access so the app can inspect files they choose to scan. It is commonly installed by people trying to recover disk space, tidy large media collections, or reduce repeated files across external disks and synced storage. Nektony also distributes it as a standalone app and references it as part of its broader Mac cleanup tool lineup.
Key features
- Scans selected folders, disks, and external drives for duplicate files.
- Groups duplicate results by file category such as pictures, music, videos, documents, and archives.
- Finds duplicate folders and can compare similar folder contents.
- Supports scanning Photos libraries and identifying similar photos.
- Can scan cloud-synced locations such as iCloud Drive, Dropbox, and Google Drive when accessible on disk.
- Provides selection and removal workflows for unwanted duplicate copies.
Review app leftovers with diCleaner
Inspect caches, support files, containers, and login items before cleaning.
Safety overview
Status: Mostly safe
This is a legitimate Mac utility from Nektony LLC, not generally associated with malware. The main risk is accidental deletion of wanted files, because duplicate-cleaning tools can remove real user data if selections are made carelessly. Review results before deleting anything, especially in photo libraries, synced folders, and external drives.
Recommendation: Keep it if you actively use it to find and remove duplicates. If you do not use duplicate-cleaning features, it is usually optional and can be removed, but only after confirming you no longer need its scans, settings, or related cleanup workflows.
Common paths
/Applications/Duplicate File Finder.app
Cache paths
~/Library/Caches/com.nektony.Duplicate-File-Finder-SIII
Support paths
~/Library/Application Support/com.nektony.Duplicate-File-Finder-SIII
Preference paths
~/Library/Preferences/com.nektony.Duplicate-File-Finder-SIII.plist
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