This will add File Compression Options
and Folder Compression Options
to the context menu of files and folders for all users to be able to compress or decompress one or more selected folder(s) and/or file(s) with NTFS Compression
to reduce their size and save space in Windows 7
and Windows 8
You must be logged in as an administrator
to be able to add or remove this from the context menu. All users will be able to use the context menu though.