No matter how much disk capacity, it will be filled up very soon. One of main reasons is there are always too many junk files, including the big and repeated ones. To effectively release the disk space, in addition to using some disk cleaning or duplicate file finding tools, another effective means is to find and delete some big and useless files! However, to manually locate those large files by checking the size of files/folders is distinctly not practical, so we need to utilize some edge tools to automate and visualize this process.