Duplicate File Finder

DUPFILES finds duplicate files on your computer and helps you delete them safely — without accidentally wiping the only copy you had.

It started from a real problem: years of photos scattered across dozens of folders, the same picture copied again and again every time a phone got plugged in.

What it does

• Two detection modes — exact duplicates (byte-for-byte SHA-256) and visually similar images (perceptual hash, catches recompressed or lightly edited copies)
• Any file type — photos (including iPhone HEIC/HEIF), videos, documents (PDF, Word, Excel, PowerPoint), or literally everything
• Smart folder cleanup — after a scan, DUPFILES shows exactly which folders contain duplicates. Tick the folders you want to clean, and it marks only the redundant copies. A copy outside those folders is always kept
• Never deletes your last copy — if every copy sits inside the folders you selected, the largest one is preserved automatically
• Color-coded overlaps — folders sharing the same duplicates get a matching color and #N tag, so you instantly see which folders mirror each other
• Real thumbnails — photos, video frames, PDF first pages
• Save and reload scans — no need to rescan a large archive twice
• 9 languages — English, Ukrainian, Spanish, French, German, Portuguese, Polish, Chinese, Arabic
• 5 color themes including dark and high-contrast

Safety first

Files always go to the Recycle Bin, never straight to permanent deletion, and always with a confirmation dialog. Everything runs 100% offline — nothing is uploaded anywhere.

Requirements

Windows. No installation needed — just run the .exe.

On first launch Windows may show "Unknown publisher". This is normal for indie software without a paid code-signing certificate. Click More info → Run anyway.

Free forever. If it saved you time, a donation is appreciated but never required.