Often when deleting files from your PC, they might not be completely deleted and they can be recovered using file recovery tools. It is always better to use a file shredder when deleting confidential files on your PC. File Shredder 3.0 is a freeware tool for Windows which allows you to securely delete files from your PC. It can remove sensitive data from your hard drive by overwriting it several times with US Dod 5220.22-M erase method.
You can either drag and drop files on to the interface or use the program add files option to add files or folders for deletion.
Once you start deleting the files, it overwrites multiple times so that the files are not recoverable. The app is compatible with Windows 7 as well.