Sometimes, when you start copying files to your hard disk, Windows throws up an error that hard disk space is low. This makes you wonder where all that hard space went and how it is being used. You cannot go through from one folder to another trying to find out which folder uses more hard disk space because there are thousands of folders in Windows. You can use SpaceSniffer freeware application to analyze your hard disk space in a few seconds.
SpaceSniffer is a portable Windows application that allows you to analyze how folders and files are structured on your disks and how much hard disk space is being claimed by each one of them. When you first run it in your PC, it asks you for picking a disk drive or specify folder path. Then it would analyze the selected item for the file and folder structure – dynamically updating the graphical display of how these folders are taking up space on your hard disk. The bigger the rectangle – the larger the file or folder size.