A fast duplicate-file scanner for Windows that reviews every match with you first — deletes go to the Recycle Bin, moves are undoable, nothing runs unattended.
Windows SmartScreen may show an "unrecognized publisher" warning on first run, since the installer isn't yet code-signed — this doesn't affect what the app does. Click "More info" → "Run anyway" to continue.
Groups by file size first, then hashes only what might actually match — full-content hashing confirms every duplicate before it's shown to you.
See every duplicate group, pick which copy to keep, and change your mind on any single file before you approve.
Decide which copy wins with a chain of tie-breakers — newest, largest, preferred folder, name pattern — reusable across every future scan.
Every delete goes through Windows' own Recycle Bin. There's no bypass — restoring a file you change your mind about works exactly like it always does.
Every approved action is logged with the reason it happened. Undo any move straight from the History screen, any time.
Run scans in the background on a schedule. They only scan and notify you what they found — never delete or move a file unattended.
Catches re-saved, resized, or recompressed copies of the same picture — not just byte-for-byte duplicates. Always flagged for your review, never auto-picked, since a similarity match isn't a certainty.
A duplicate scanner is only trustworthy if a mistake is easy to undo. Duplicate File Finder never touches a file without your approval on the Review screen, never deletes anything except to the Recycle Bin, and keeps a full action log so every move it makes can be reversed — including from a scheduled scan you weren't watching.
You'll receive your license key by email within minutes — sent automatically, no manual step.
Open Duplicate File Finder → click ★ Upgrade to Pro in the titlebar.
Paste the key and click Activate. One-time, no expiry, no subscription.
Yes. It appears because the installer isn't code-signed yet, not because anything is wrong with it. Click "More info" → "Run anyway" to continue.
Yes, with Pro's "find similar photos" option — it catches re-saves, resizes, and recompressed copies of the same picture (JPEG, PNG, WebP), not just exact byte-for-byte duplicates. These are always flagged for your review with no copy auto-selected to keep, since it's a similarity match rather than a certainty. One known limit: a version of a photo rotated 90/180/270 degrees may not be caught yet.
No. A scheduled scan only scans and saves what it found — it never deletes or moves anything unattended. The next time you open the app, it asks whether you want to review the results, exactly like a manual scan.
Email us within 7 days of purchase if Duplicate File Finder Pro isn't working out for you. Refunds are granted for genuine issues, not automatically. See our Refund Policy for the full details.
No. Free and Pro both work with just an installed app and, for Pro, a license key emailed to you after purchase — no account, no login, no internet connection required to activate or use it day to day.
No telemetry, no analytics, no tracking. Everyday use — including every scan — never contacts us. The one exception is a single check when you first click Activate, which confirms your key hasn't been refunded and isn't already active on another device; it still works offline if there's no connection at that moment. See our Privacy Policy for specifics.
Duplicate File Finder