Duplicate File Finder Pro 9.2.1 on Mac

When you add a cloud folder like Dropbox to your Mac, it often pulls in files you already have somewhere else — downloads, old projects, backups. After a while, you end up with the same PDF, photo or zip file sitting in two places. Duplicate File Finder Pro is a straightforward utility for finding those duplicates and clearing them out.

What can it scan?

You can point it at your main hard drive, an external disk, or just the Dropbox folder itself. It also works with network volumes, so if your Dropbox lives on a NAS, that is covered too.

How does it help you choose what to delete?

The app shows a sorted list of duplicates by name, size or type. It includes smart selection — one button picks all but one copy in each group. Before you delete anything, you can preview the file to make sure it is the right one.

Move duplicates to Trash or delete permanently

You can either move them to the Trash or delete them permanently. The same tool also finds duplicate and similar folders, which is useful if you have reorganised your Dropbox and left old folder structures behind.

Scan hidden folders like ~/Library

Some wonder if the app can scan hidden folders like ~/Library or system locations. It can. You just enable that option in the scan settings, and it will look inside those directories too. This matters if you have apps or caches that have duplicated user files without you noticing.

Another common question is whether the tool can handle external drives you unplug mid-scan. It handles it gracefully — the scan simply stops, and you can resume later from where you left off. No corrupted results, no forced restart of the whole process.

People also ask about restoring files after deletion. Duplicate File Finder Pro includes a restore feature for removed duplicates, so if you delete something and then realise you needed it, you can bring it back. Just do not empty the Trash before you restore — the app keeps a record of what it moved there.

Open Finder directly from scan results

It works well alongside Finder itself. Once the scan finishes, you can open a Finder window directly to the folder containing any duplicate — useful when you want to check the context around a file before deleting it.

For people who keep files across Dropbox, iCloud Drive and an external SSD, the app can scan all three in one session. The results are grouped by category — images, video, music, archives, documents — so you can clean one type at a time. This is handy when you want to free up space quickly without reviewing every single duplicate file on the system.

Narrow scans to large videos or archives

Right after installation, open the preferences and adjust the file type filters. By default, the app scans everything, but if you only care about large videos or old archives, you can narrow it down. This makes the first scan faster and the results more focused.

Turn on the option to scan hidden folders if you suspect duplicates in system-level directories. Most people leave this off, but for a thorough clean-up, it is worth enabling once.

Finally, set the smart selection rule to your preference. The default usually keeps the file with the longest path, which tends to be the one deeper in a folder structure. If you prefer to keep files in a specific location — say, always keep the copy in Dropbox — you can adjust that rule before you start selecting duplicates.

• Version 8.5.2.

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

Kit check at a glance