When Folder Size detects that other programs are doing a lot of reading to and writing from the hard disk being scanned, the background scanning will wait for the other programs to finish.

Background scans won't monopolize your disk.

Explorer will automatically update the folder size column in real-time.Large folders will continue to scan in the background while you browse your folders. As soon as you display the Folder Size column, you'll see sizes immediately. The directory list, which resembles the tree view of the Windows Explorer but is sorted by file/subtree size, The treemap, which shows the whole contents of the directory tree straight away, The extension list, which serves as a legend and shows statistics about the file types. No scanning phase before you can start.

Not just for disk cleanup, but for any time you need to choose a folder. It's always there when you're viewing your folders (even in Open and Save file dialog boxes, you can change the view), and it's a great visual cue to help you find the one you're looking for. Don't switch to another program to see folder sizes.It keeps track of which folders you view, and scans them in the background so you can see complete size of all files within the folder. The new column shows not only the size of files, but also the size of folders. Folder Size for Windows adds a new column to the Details view in Windows Explorer.

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