🧹 DupCleaner Free – Duplicate File Finder with Preview & Auto Delete

DupCleaner Free is a modern Windows desktop application designed to quickly detect and manage duplicate files using intelligent hashing, preview thumbnails, and automated cleanup options.

This version is ad-supported to keep it free for everyone.

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🚀 Features

• 🔍 Fast duplicate detection (size + hash comparison)
• ⚡ Quick hash + full hash verification
• 🖼️ Scrollable thumbnail preview for images
• 🗂️ Drag & drop files and folders
• 📊 Real-time progress bar and counters
• 🧠 Option to keep newest file instead of first
• 🗑️ One-click duplicate auto deletion
• 🧾 Live duplicate group listing
• 💻 Clean modern dark UI
• 📁 Supports large directory scanning (threaded)
• ❌ Cancel scan anytime
• 📢 Built-in rotating ad banner (non-intrusive)

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🧰 Use Cases

• Clean duplicate photos
• Remove duplicate downloads
• Organize backup folders
• Free up disk space
• Detect copied project files
• Manage large media libraries
• Clean USB / external drives

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⚙️ How to Use

1. Add files or folders:

   • Click 🗂 Files to select files
   • Click 📁 Folder to scan a folder
   • Or drag & drop files/folders

2. Click 🔍 Scan to detect duplicates

3. Select a duplicate group from the list

4. Preview duplicates in the thumbnail panel

5. Choose option:

   • Keep first file
   • Keep newest file

6. Click 🗑 Delete to remove duplicates

👉 Click 🛑 Cancel anytime to stop scanning

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📦 Download (EXE)

Go to the Releases section and download:

DupCleaner-Free.exe

No installation required — just run the executable.

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⚠️ Important Notes

• Windows SmartScreen may show a warning (normal for unsigned EXE)
• Click More Info → Run Anyway
• Antivirus false positives may occur due to PyInstaller packaging
• Always review duplicates before deletion

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💡 Tips for Best Results

• Scan folders separately for better performance
• Use "Keep newest" for backup cleanup
• Preview images before deleting
• Use SSD for faster hashing
• Cancel and rescan if adding new files

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📢 Ads & Support

This free version includes small banner ads:

• Ads rotate automatically
• Click to open product/tools pages
• ❌ No tracking
• ❌ No background processes
• ❌ No data collection

🙏 Ads help support development and keep the tool free.

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💎 Pro Version

A Pro version (no ads) is available with a cleaner experience.

👉 Upgrade here:
https://matetools.gumroad.com

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🛠️ Built With

• Python
• Tkinter
• TkinterDnD2
• Pillow (PIL)
• hashlib
• threading

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👨‍💻 Developer

Mate Technologies
https://matetools.gumroad.com

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📄 License

This project is distributed for personal and commercial use.
Please do not redistribute modified versions without permission.

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⭐ Support

If you find this tool useful:

• ⭐ Star the repo
• 🔗 Share it
• 💎 Consider upgrading to Pro

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📷 Preview

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🔥 Version

DupCleaner Free (Ad-Supported)
Release v1.0