You can use CCleaner’s Duplicate Finder to locate files which may have been duplicated on your hard drive. These files are often copies of your documents, videos, photos and other personal files that have appeared over time. These all needlessly take up space on your drive, and can make it harder for you to correctly organize your files.
CCleaner’s File Finder can find duplicate files matched by File Name, Size, Modified Date and Content. It will then show you all the duplicates it has found, and let you delete any unnecessary duplicates to save space on your computer.