Duplicate File Finder Pro 9.2.1 (macOS)

Duplicate File Finder Pro 8.5.2 runs on any Mac from macOS 10.13 High Sierra onward, both Intel and Apple Silicon. The current release brings the same core features: scanning multiple disks or folders, sorting duplicates by name, size, type or count, and sending selected files to the Trash or deleting them permanently. You can also restore removed duplicates if needed.

external drives and hidden folders still covered

• Works with external hard drives and network folders.
• Can find duplicates in hidden folders.
• Finds similar folders to merge or clean up.
• Shows a duplicate file list with total size per group.

what 8.5.2 brings

Version 8.5.2 is a maintenance release. No new features have been added; the update focuses on stability fixes under current macOS versions. If you already have the app running, there is no pressing reason to upgrade unless you hit a specific bug that this build addresses.

when a teacher needs space fast

A music teacher at my school keeps a library of royalty-free audio loops for student projects. Over a term, the same loops get copied into project folders, lesson files, and shared drives. When the department Mac starts warning about low disk space, she points Duplicate File Finder Pro at the Music folder, the shared staff drive, and the external backup disk. The scan groups the results by type — music, archives, documents — so she can see which audio files are duplicated most. The smart selection picks the oldest copies, and she deletes them in one pass without touching the originals in the master library.

visual report breaks down duplicate data by type

• The visual scan report shows a breakdown of what kind of data is duplicated — images, video, music, archives, documents — without digging through the file list.
• You can sort duplicates by total size, not just individual file size, which helps spot the groups that reclaim the most space.
• Hidden folders are included in scans by default. Useful when macOS or app caches hold duplicate installers or old assets.
• The merge folder feature tidies up directories where content has drifted into duplicates across two locations, merging the unique files into one folder.

built for shared drives, media libraries, and backups

Anyone managing shared drives, media libraries, or backups will see the benefit. School IT technicians, photographers with multiple working copies of raw files, and home users who accumulate duplicate music or document versions are the obvious audience. The app also handles network folders, so it works for small offices where users store project files on a NAS. The restore option adds a safety net that makes sense for people who clean up infrequently and want a way back if they delete too fast.

one more scenario: the home office backup mess

A home user backs up their Mac to two external drives, rotating weekly. Over time, the same family photos and tax PDFs end up in Time Machine snapshots, manual folder copies, and old drive archives. Duplicate File Finder Pro scans both drives and the internal disk. The similar folders feature catches the "Photos 2023" and "Photos2023_v2" directories that are nearly identical but not exact copies. Merging them saves a step of manual comparison. The scan results sort by duplicate count, so the most-repeated files are dealt with first.

small conveniences (continued)

• The preview pane opens individual files before deletion, which helps when the file name alone does not tell you which copy is the keeper.
• Selecting multiple duplicates with one button avoids clicking each checkbox when a group of identical files is found.
• The app can find duplicates in hidden folders without any extra setup — useful when system caches or app data folders are eating space.
• Restoring removed duplicates works from the same interface, so a mistaken deletion does not mean a trip to the Trash.

• macOS 10.13 or later
• Intel or Apple Silicon
• Built-in activation included