How to Free Space by Cleaning Duplicate Files on Windows

Dec 15, 2025

Wise Duplicate Finder scans and frees the disk space used by duplicate files.

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Running low on disk space is a common issue for Windows users, especially when your PC has accumulated thousands of files over time. Documents, photos, videos, and application data can pile up quickly—and many of them are often duplicates.

Duplicate files take up valuable storage space, slow down file searches, and clutter your folders. This guide walks you through how to use Wise Duplicate Finder to free up storage space by scanning, identifying and safely removing duplicate files in just a few clicks.

How to Free up Disk Space Using Wise Duplicate Finder

Step 1. Download & Install

Visit the official WiseCleaner website to download the latest version of Wise Duplicate Finder on your Windows PC.

Step 2. Select the Location

After launching the software, click the folder button to select the disk or add the specific folder you want to clean.

Step 3. Choose Comparison Method

Wise Duplicate Finder offers multiple scan modes from simple to advanced to suit your various needs:

File name and size: Fast, basic comparison.

Part of content: Detects similar files.

The entire content: Compares file content byte-by-byte.

Step 4. Begin to Scan

When you have checked the target location and comparison method, click on the Scan button to start the process.

Step 5. Preview & Select

Once the scan is complete, you will see duplicate files lists in Name, Type and Size...

Preview the properties of different files, and then select specific files ( especially those take up huge disk space) to delete.

Step 6. Remove Unnecessary Duplicates

After choosing which file in each group you want to remove, click the Delete button.

Extra tip

If you accidentally delete something, Wise Duplicate Finder provides a Restore feature to restore files with a single click.

Conclusion

If your system is running low on disk space, or you simply want a cleaner file system for storing things that matter—Wise Duplicate Finder is a tool which is definitely helpful.

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