Duplicate file finder that compares content, not names

DeepRecover Pro finds files whose content is identical, even when the names differ or the copies sit in different folders. In every group one copy is marked as the original, so you can never delete every copy by mistake.

How it decides two files are the same

1. It groups files that have exactly the same size.
2. It hashes the first and last 64 KB of each candidate to throw out most non-matches quickly.
3. It computes a full SHA-256 hash of the remaining candidates. Matching hashes mean identical content.
4. The Windows app can add a final byte-by-byte comparison for absolute certainty.

Files are read in 8 MB slices, so very large files such as videos and disk images do not freeze the page.

Which copy is kept

The oldest copy is marked as the original. On Windows the app also avoids picking names like “copy” or “(1)” as the original. You can change the original in any group, and at least one copy always stays.

Deleting without regret

• Windows app: removed files go to an Undo Vault you can restore from. You can also replace duplicates with hardlinks on the same NTFS drive, which frees space and keeps every file path working.
• Web app: deletion is permanent and needs your explicit permission plus a confirmation step. You can export the list as CSV first.
• Phone app: browsers cannot delete gallery files, so the phone app gives you a list to delete in your Gallery or Files app.

What it does not do

Exact matching will not find the same photo saved at a different size or quality. For that, use the similar-photo finder in the Windows and phone apps.