Duplicate File Finder for Mac
Duplicate File Finder for Mac: Finds Real Copies by Content, Not Filename
FolderManifest groups duplicates by what is actually inside each file (SHA-256 content hash), so renamed copies cannot hide. Scan a folder or a whole drive, review every group before anything is deleted, and keep a report that proves what you kept.
On an Intel Mac? Download the Intel build
On Windows? See the 10 best duplicate file finders for Windows →
Comparing two folders instead? Compare folders on Mac →
Apple Silicon & Intel · Free for 7 days · No credit card · Runs locally
Matched by SHA-256, not by name
Renamed copies still get caught. Files that only share a name stay separate. Content decides, not the label.
Native on Apple Silicon
Native builds for M1–M4 Macs, plus an Intel build for older machines. Everything runs locally on your Mac.
Review before anything is deleted
See every duplicate group and approve the plan first, then keep a checksum manifest proving what you kept.
How this compares to other Mac duplicate finders
Most Mac duplicate finders are built around reclaiming disk space, and several of them are good at it. It is worth knowing which job you actually have before picking one.
Dedicated Mac cleaners — Gemini, Nektony, Cisdem
These are polished, Mac-native duplicate cleaners, and they lean heavily into media: similar photos, look-alike images, large media libraries. If your goal is to free up space on a personal Mac and you want a guided cleanup experience, they do that well and FolderManifest is not trying to replace them.
dupeGuru — free and open source
dupeGuru is free, open source, and runs on macOS, Windows, and Linux with several scan modes. If budget is the deciding factor and you only need to find and delete copies, it is a reasonable place to start.
FolderManifest — when you need a record, not just a cleanup
The difference is what you are left with afterwards. FolderManifest groups duplicates by SHA-256 content hash, shows you the plan before anything is removed, and saves a manifest you can re-check later to prove what the folder contained and what you kept. That matters when the files belong to a client, a project handover, or an archive you may have to answer for — and the same manifest verifies on Windows and Linux too. For pure disk-space reclamation on a personal Mac, the tools above may suit you better.
Frequently Asked Questions
What is the best duplicate file finder for Mac?
The one that decides by file content rather than by filename. FolderManifest computes a SHA-256 checksum for every file and groups the ones whose hashes match, so a renamed copy is still caught and two files that merely share a name are not treated as duplicates. It runs natively on Apple Silicon and Intel Macs, and nothing is uploaded.
Is there a free duplicate file finder for Mac?
Yes. You can find duplicates free in your browser with the FolderManifest duplicate finder — no install and no account. For a whole drive, download the Mac app and use it free for 7 days with full hashing, dedupe, and manifest export. No credit card is required for either.
Can it find duplicate files with different names on Mac?
Yes. Matching is done on SHA-256 content hashes, not names, so copies that were renamed or moved are still grouped together. A photo saved as IMG_0421.jpg and the identical bytes saved as holiday.jpg end up in the same duplicate group.
Does it run on Apple Silicon (M1, M2, M3, M4)?
Yes. There is a native Apple Silicon build and a separate Intel build. On the download screen, pick Apple Silicon for M1–M4 Macs or Intel for older Macs. Both run entirely on your machine.
Why does macOS show a warning when I open it?
The Mac app is not notarized by Apple yet, so macOS shows a one-time warning the first time you open it. Right-click the app, choose Open, then Open again. You can also verify the download against the published SHA-256 checksums. The app runs completely on your Mac and never sends your files anywhere.
Will it delete the wrong copy?
Not on its own. FolderManifest shows every duplicate group for review before anything is removed, and you approve the plan. You keep a checksum-backed record of what was kept, so the cleanup is reversible in the sense that you can always prove what the original set contained.
What users say
A clearer folder story, from people who use it.
“FolderManifest makes it easy to organize folder structures and manage duplicate files while keeping everything safe and secure.”
Mehedy H.Research and operations“I can understand a project folder at a glance, review what changed, and keep the cleanup process clear for everyone involved.”
Tasmina Akter C.Project coordination“FolderManifest clearly displays project structures and contents, making it easy to understand where everything is at a glance and maintain consistency across teams.”
Zahirul I.Business partnerBusiness-partner reviewDuplicate copies waste gigabytes. Deleting the wrong one costs more.
Run FolderManifest on your Mac, review every duplicate group before anything is deleted, and keep a checksum-backed report that proves what you kept.
Download for Mac — Apple SiliconOn an Intel Mac? Download the Intel build
Apple Silicon & Intel · Free for 7 days · No credit card · Runs locally