How do I use CCleaner’s Duplicate File Finder?

To start the Duplicate File tool, open CCleaner and go to Tools, and then select the Duplicate Finder. This presents a list of options, allowing you to match files by:

  • Name
  • Size
  • Date Modified
  • Content

We recommend you have all of these options checked, so that the file matching will be more accurate. You can select which files to ignore using the checkboxes in the ‘Ignore’ section of the page.

You can then specify extra drives and/or folders to include or exclude using the Include and Exclude tabs. To start the finder, click 'Search'.

You can delete files by ticking the checkbox and selecting 'Delete'. Please note it is not safe to remove all the duplicates CCleaner finds.


Which duplicates should I delete?

The Duplicate Finder can search for files with the same File Name, Size, Modified Date and Content; however it isn’t able to determine which files are needed and which can be safely deleted.

For this reason, we recommend that you review the file path and, if necessary, the file itself to ensure that it is in fact a duplicate and not needed by a program on your computer. You can open a file from the Duplicate Finder screen by right clicking the file > Open Containing Folder, then double clicking the file in the window that opens.

We would also recommend that you do not delete any duplicates that are located in C:\Program Files, as it is likely that these files will be required for a program to run.

It is normally safe to delete duplicates of your personal pictures or films, but as before ensure that you verify the file path and the content of the files before deletion.