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.

Folder Size (for Windows) is an auxiliary free add-on based on service, used to be integrated into Microsoft's built-in Windows Explorer, so as to give it the ability of viewing folder size in real time. It will work just like the native function of Windows.

We are all familiar with the Windows Explorer, and i believe that in the daily use many people have found one of its biggest shortage, that is there is not a view method to allows us to see the size of each folder (or the contained file/folder numbers). So that when the disk space becoming insufficient, and you want to know which folder is taking up a lot of space, then it is doubly difficult.