Fast Duplicate File Finder for All Windows OS Users

Do you need a fast duplicate file finder? If you discover duplicate files on your system, a quick duplicate file finder might be really useful. You’ll learn how to utilize a quick duplicate file finder.

Posted by @Lucas July 17, 2025 Updated By @Lucas July 11, 2025

Are you tired of the clutter on your Windows computer, slowing down its performance and gobbling up precious storage space? If so, you're not alone. Windows users often find themselves grappling with multiple copies of the same files scattered across their system. These duplicates not only waste valuable disk space but also make data backups and maintenance a daunting task.

Windows and duplicate files

In the realm of Windows computers, duplicate files are an unwelcome but familiar guest. But what exactly is a duplicate file finder, and how does it work its magic on a Windows machine?

At its core, a duplicate file finder is a specialized software tool designed to locate and eliminate identical or similar files from your computer. It employs algorithms to scan the contents of your files, looking for similarities in file names, sizes, and even content.

Once identified, these duplicate files can be deleted or managed according to your preferences, freeing up much-needed storage space and streamlining your computer's performance.

There is no Windows built-in tool to find duplicate files

Surprisingly, Windows itself doesn't offer any built-in tools to effectively clean up duplicate files. As a result, users are left with two choices: manually hunt down and delete duplicates (a tedious and error-prone process) or turn to third-party duplicate file finder software to do the job efficiently.

Fast duplicate file finder for all Windows: AOMEI Partition Assistant

When it comes to third-party solutions, AOMEI Partition Assistant for Cleanup should be on your waiting list. This software not only sweeps your system for duplicate files but does so with precision and ease, ensuring your Windows computer runs smoother than ever.

It is a disk and partition management tool that supports Windows 11/10/8/8.1/7/ users. With the ever-growing data stored in their systems, users often encounter the proliferation of duplicate files across their devices. Over time, these duplications accumulate in different locations, resulting in not only wasted storage space but also a decline in system performance.

The "Find Duplicate Files" function within this tool, offers users a swift and efficient solution. It performs rapid scans to pinpoint redundant files, empowering users to establish automated cleaning schedules for their devices. This software's capabilities encompass a wide range of file types, including images, videos, audio, documents, and archives. Importantly, it intelligently skips over vital file types such as .dll, .lib, .sys, and more, preserving system integrity and functionality.

AOMEI Partition Assistant for Cleanup

Free Up Disk Space To Keep Your PC Running Smoothly and Efficiently

Step 1. Initiate Find Duplicate Files. Install and launch AOMEI Partition Assistant for Cleanup. Click the "Find Duplicate Files" tab.

Step 2. Select a path to scan duplicate files. You can either click "Scan Now" to start the scan of your system C: drive. Or, click "Custom Scan" to manually select paths to be scanned. (Here, we take the "Custom Scan" as an example.)

Step 3. After clicking "Custom Scan", all local and external drives on your PC will be displayed. You can also click the "Add Path" button, and then a browse folder window will pop up. So you can add more paths on this PC, like Desktop, Downloads, and other folder paths.

Step 4. Once necessary paths are added, you can click the "Scan Now" button to start the scan process.

Step 5. The scan process might take time. After the scan is complete, all duplicate files will be listed. You can click the button behind to locate them.

Step 6. Select duplicate files to start deletion. You can either manually select duplicate files, or click the "Smart Select" button to automatically select unnecessary duplicate files to delete.

Tips: If the "Smart Select" is ticked, only the oldest duplicate file will be unticked. It means that all duplicate files except the oldest one will be ticked to delete. (The oldest file means the file that was created first. This file will not be deleted. All other duplicate files are considered copies of the oldest file. )

If you manually select all copies of duplicate files, you will get a pop-up warning window to keep at least one copy of the duplicate files. If you indeed want to delete all copies of duplicate files, you can click "OK" so all copies of duplicate files will be selected to delete.  

After unnecessary duplicate files are selected, please click the "Clean Now" button to start the deletion.

Step 7. Delete successfully. The deletion might take time. After the process is finished, the selected files will be deleted, and you will get a cleaning completed window displaying how much data you deleted in total. 

Bonus tips: Free up more space on your drive

Cleaning duplicate files is a great place to start, but there are more ways to clean up your computer. In AOMEI Partition Assistant, a duplicate file finder is not the only solution for releasing space. Under the “Free up” tab, you can see the “PC Cleaner”, “App Mover”, Delete Large Files” functions.

▶ Clean Junk Files
"Clean Junk Files" function can scan and delete cache files, temporary files, installation files, thumbnails, and registry garbage files, among other things. After the scan, you can either click "Clean All" to clean up your PC or reset the deletion task for the target file based on your needs.

Delete Large Files
This feature can dig out large files hidden in your disk and show them so you to decide whether they need to be deleted or not.

Verdict

A fast duplicate file finder can quickly solve repetitive file issues on your computer. But if you want to release more available space on the drive, you might need to do more.