In this video i will compress a folder with files and check the size before and after compressing.

1. Expand My Computer. Select some files, then put the selected file in this folder C:\Temp.
2. Right-click the Temp folder and select Properties. In the General tab of the folder’s Properties dialog box, note the value listed for Size On Disk. Then click the Advanced button.
3. In the Advanced Attributes dialog box, check the Compress Contents To Save Disk Space option. Then click the OK button. In the folder’s Properties dialog box, click the Apply button.
4. In the Confirm Attribute Changes dialog box, select Apply Changes To This Folder, Subfolders And Files (if this dialog box does not appear, click the Apply button in the folder Properties dialog box to display it). Then click the OK button.
5. In the General tab of the folder’s Properties dialog box, note the value that now appears for Size On Disk. This size should have decreased because you compressed the folder. Click OK.