TreeSize is an intuitive and useful program that shows you which files take up the most storage space on hard drive, retrieves detailed information about occupied disk space, and analyzes a folder’s structure. You can directly run the executable file on any PC and install this tool as a portable product. There is a simple user interface comprises a standard window with files displayed in tree view mode. The user can view the file size, folder, permissions, last modification and date of creation, allocated size, path length, directory level, and more. It is possible to open a new instance in the current app, scan directory or a specified volume, sort by name or size, print a report, and expand to a level from one to six. This utility offers you to view error messages during scanning, set a filter ton include only certain file formats, and select colors for the size indicator in the folders background. TreeSize is a straightforward application that comes with an incomplete help file and uses a moderate amount of system resources.