Duplicate detection
Exact (hash) + Near‑duplicate (dHash)
Lower = stricter (0 = identical). 5–8 is a good starting range.
Keep rule
Results
No scan yetHow it works (privacy‑friendly)
- Exact duplicates: SHA‑256 over file bytes.
- Near duplicates: dHash 64‑bit on a 9×8 grayscale canvas, compared by Hamming distance.
- Nothing ever leaves your device.
Troubleshooting on Windows (SmartScreen/blocked files)
- If Windows warns that extracted files are blocked, right‑click the ZIP → Properties → check Unblock → Apply → extract again.
- Or open PowerShell and run: Unblock-File .\\images_deduped.zip (or after extracting: Get-ChildItem -Recurse | Unblock-File).
- Or use Export to Folder (no ZIP) above to write files directly, which usually avoids this warning.