01
Does it find only exact duplicates?
Yes. Matching is hash-based (SHA-256), so only byte-identical files are grouped.
Duplicate FinderExact Hash Detection
Detect exact duplicate files locally with SHA-256 and export cleanup-ready reports.
Frequently Asked Questions
Everything you need to know about the tool.
02
Do my files leave this device?
No. Hashing and analysis happen entirely in your browser. No uploads.
Private & Secure
Processing happens 100% in your browser. Files are never uploaded to any server.
Blazing Fast
Powered by WebAssembly for near-native performance. No waiting for uploads.
No Install
Works on any device (Windows, Mac, Chromebook, Mobile) directly in Chrome/Edge/Firefox.