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What is the Duplicate File Finder in RJL System Cleaner?

The Duplicate File Finder is a built-in scanner that detects identical copies of files on your computer. It runs automatically as part of every scan.

Duplicate files are one of the biggest sources of wasted disk space -- most PCs have 5 to 50 GB or more of duplicate files. These are files that have identical content but exist in multiple locations: photos copied to multiple folders, downloaded files that ended up in two places, backup archives that were duplicated instead of moved.

Scanning is free. Every user can see exactly how many duplicate files exist, how much space they waste, which files are duplicated, and where every copy lives. You can browse and explore the full results at no cost.

Removing duplicates requires registration ($19.99). When you register, the "Remove Duplicates" action becomes available. The app keeps the oldest copy of each file (the original) and removes the newer copies. This is a one-time purchase, not a subscription.

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Added: Feb 22, 2026   |   Last Updated: