Smart Duplicate Finder

Finds duplicate files by content (MD5) and visually similar photos (perceptual

hash), including the iPhone HEIC and AVIF formats that Windows itself often

cannot open. Two-phase scan with a guided candidate dialog and per-family time

estimates. Results are colour-grouped by file family with a colour-coded Excel

report, so you can clean up at your own pace. Right-click a result to open the

file, open its folder or copy its path - opening is deliberately disabled for

executable files. By design the program never deletes

your files - the only optional deletion is invisible system junk

(Thumbs.db, .DS_Store) verified by content signature before removal.

The report also says which copy is most likely the original and, just as

importantly, WHY - reading what the files say about themselves through their

names, folders and dates ("the others are named as copies", "the others sit

deeper in folders"). Where nothing tells them apart it says so plainly

instead of guessing. A side effect worth mentioning: on a Python virtual

environment the rule reliably picks the real package over pip's vendored

copy of it.

Proven on a three-million-file endurance exam: a report larger than Excel's

row limit is now split into numbered files instead of being silently

truncated, and pathological same-name piles no longer stall the scan.

One exe for all UI languages (English, Lithuanian, Russian and German,

switchable in-app, first run follows the Windows language). Optional portable

mode keeps all working files next to the exe and leaves no traces on the

computer.

Portable single exe: no installation, no ads, no telemetry, no network access.