

Best Duplicate Files Finder
iSumsoft DupFile Refixer is a secure and efficient tool that can help you easily locate and delete identical/similar files on Computer, so as to save disk space.
- Accurately scan, classify and delete all types of duplicate files.
- Selectively search for duplicate files on Windows/external drive/USB.
- Clearly show you the detected duplicate files by detail report.
- Safely enable a delete confirmation to prevent from mistaken cleanup.
- Easily optimize disk space and increase your Computer performance.
Identify Duplicates with 100% Accuracy
- With smart MD5 Message-Digest Algorithm, iSumsoft DupFile Refixer can help you precisely catch and erase all types of duplicate files on your Computer with one click, including photos, videos, documents, music, archive, etc. Moreover, it also allows you to make a specific scan with customized settings, choosing scan file type and skipping hidden files, system files, program files or recycle bin files.
Delete Duplicates with 100% Safety
- iSumsoft DupFile Refixer can identify any identical or similar file in Windows local & external hard drive/USB drive and generate a detail report of the duplicates containing file name, file path, file type, file size and so on. In this way, you are able to review the duplicates and decide if you want to remove them. For safer deletion, it will ask for your confirmation to avoid removing your wanted files accidently.
Technical Specifications
Supported Storage Devices
- Computers, Laptops
- HDDs, SSDs, SSHDs
- USB Drivers, SD Cards, Memory Cards, Memory Sticks, TF Cards, RAID/Floppy Disks
- Digital Camera, Music Player, Camcorder, Action Camera, Drone Camera, Dash Camera
Supported Windows OS
- Windows 11/10/8.1/8/7/Vista/XP/20000 (32-bit or 64-bit)
- Windows Server 2025/2022/2019/2016/2012/2008/2003
Supported File Systems
- ext2/ext3/HFS+/ReFS
- NTFS (Windows Only), EXFAT, FAT16/FAT32
Hardware Requirements
- CPU: 1 GHz or above
- RAM: 1 GB at least
- Hard Disk Space: 5.6 MB Minimum
Frequently Asked Questions
Q1: Is DupFile Refixer accurate and safe to remove duplicates?
A: Yes. iSumsoft DupFile uses MD5 Message-Digest Algorithm to smartly identify duplicates files by comparing the file names as well as contents with 100% accuracy. Furthermore, it will list the duplicates and won't randomly delete your files without your confirmation.Q2: Will it delete useful files from my Computer?
A: No, it won't. It can accurately find out and list the duplicate files for you. Then you are able to choose whether to delete the files or not. It's up to you.Q3: Is it possible to recover files if I delete them accidently?
A: Definitely. You can easily restore your deleted files from Recycle Bin. Even if the Recycle Bin is emptied, you can still recover deleted files with a powerful Data Recovery Tool.Q4: Does DupFile Refixer slow down my PC?
A: No, it won't. DupFile Refixer is a clean program with small size, which won't decrease your PC's running speed or do harm to your system/data. Instead, it can help your PC get rid out of multiple duplicate items, so as to free up and speed up your PC!Easy to Use
Even computer novices can use the software conveniently and quickly.
100% Working
The software will definitely let you gain a cleaner and faster computer.
100% Safe
The software is 100% safe and will not cause any adverse effects on your PC.
Best Compatibility
Compatible with all Windows operating systems and hardware.
Listen to the user's statement
It is easy to use and help me quickly find out the duplicate files on my Windows. I don't have to manually look for the duplicate file one by one any more. Great!
Fast scan and accurate result! It works smoothly wihtout any problem. Thank you!





