Find and Remove Duplicate Files on Windows with AllDup

Duplicate photos, copied documents and forgotten downloads can gradually consume valuable disk space. AllDup is a Windows utility designed to find these duplicates and help you clean them up efficiently.

Finding real duplicates

AllDup can search selected drives and folders and compare files using different criteria, including filename, size and file content. Comparing content is particularly useful because two identical files may have completely different names.

Searches can be customized with filters, allowing you to include or exclude particular folders, file types or file sizes. AllDup can also search inside certain archive files and help identify similar pictures.

Reviewing and cleaning up

After a scan, duplicate files are organized into groups so you can compare their locations and properties. Selection rules can help mark files automatically—for example, keeping one file from each duplicate group.

Selected files can then be deleted, moved or copied. AllDup also provides options for replacing duplicates with links, which can save space while preserving access from different locations.

Important: Always review the results before deleting files. Start with personal folders such as Downloads, Documents and Pictures, and avoid removing files from Windows or application directories unless you know exactly what they are used for.

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