Duplicate file finder for macOS
StorageScope includes duplicate file review for macOS. It starts with same-size duplicate candidates, then verifies matches with SHA-256 inside a bounded work budget so cleanup planning can separate verified duplicates from files that still need human review.
How to review duplicate files
- Scan your folders — StorageScope collects same-size duplicate candidates automatically during the local scan.
- Verify matches with SHA-256 (auto for groups within budget, or on demand via "Verify Now") and assign a keeper per verified group using the comparison sheet.
- Send non-keeper copies to Trash as a batched, transactional move; keepers are excluded automatically.
How duplicate review works
- Finds same-size candidates during local folder scans.
- Uses SHA-256 verification before marking duplicate matches as verified.
- Keeps hashing bounded so large scans do not turn into uncontrolled background work.
- Separates verified duplicate reclaim from review-only cleanup suggestions.
Privacy posture
StorageScope does not upload file names, paths, contents, hashes, scan results, analytics, or identifiers. Duplicate review happens locally against folders the user grants access to.
Related StorageScope pages
Requires macOS 14 or later · verify with SHA-256 · all releases