Microsoft File Compression Utility (Compress) and Microsoft File Expansion Utility (Expand) are two tools for the Microsoft Windows operating system. These utilities are useful when you prepare your application files for distribution and as part of the installation process for your application. Compress compresses files to a smaller size, so you can fit more files on a disk. Expand decompresses files after they have been compressed, expanding them to their original sizes. You run these utilities from the MS-DOS command line.
The following sections describe these utilities.