Professional-grade audio deduplication with the features DJs and producers actually need. Analyze any format, detect duplicates with 99.9% accuracy, and organize your library—without ever deleting a file.
Using Chromaprint technology, DupeDJ generates unique audio fingerprints for each track. This means we can identify duplicates even when files have completely different names, tags, or formats. Same song, different rip? We'll catch it.
Not all duplicates are equal. DupeDJ automatically analyzes audio quality and recommends keeping the best version. We consider format (lossless vs lossy), bitrate, sample rate, and bit depth to ensure you never lose quality.
We don't rely on a single method to find duplicates. DupeDJ uses a weighted combination of audio fingerprints, duration matching, metadata comparison, and file size analysis to achieve 99.9% accuracy.
Time is valuable. DupeDJ uses a multi-threaded Rust backend to scan your library at maximum speed. Process thousands of tracks in minutes, not hours. Chunked processing allows responsive cancellation at any time.
DupeDJ isn't just a scanner—it's a complete library management tool. Browse all your scanned audio files, view metadata, search and filter your collection, and organize with multiple view options.
Preview and compare tracks directly within DupeDJ. Play any file from your library or duplicate groups to hear exactly what you're keeping or removing. Full playback controls with volume and seek support.
Every feature you need for complete library management
DupeDJ NEVER deletes files automatically. Duplicates are moved to a "_duplicates" folder you choose. You review them and delete the folder yourself—only when you're ready.
Your music never leaves your computer. All processing happens locally for complete privacy and security.
MP3, FLAC, WAV, AIFF, AAC, OGG, M4A, WMA, and more. If you can play it, we can scan it.
View past scan sessions, resume where you left off, and track your cleanup progress over time.
See exactly what we found before taking action. Compare file details, play audio previews, and make informed decisions.
Watch progress in real-time with live stats for files scanned, duplicates found, and storage reclaimable.
Quickly navigate to any file in your system file explorer with one click.
Built with modern technology for performance and reliability
Works with all popular audio formats
Lossless formats (FLAC, WAV, AIFF, ALAC) are automatically prioritized over lossy formats
Three simple steps to a cleaner library
Select any folder containing your music. DupeDJ scans recursively through all subfolders.
We extract metadata, generate fingerprints, and compare files using multiple signals.
Browse duplicate groups, preview tracks, see quality recommendations, and move duplicates to a review folder. Delete only when you're ready.