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.
Does it find only exact duplicates?
Yes. The tool compares SHA-256 hashes and only groups byte-for-byte matches.
Do my files leave my device?
No. Hashing and grouping run entirely in your browser with 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.