Alternate EXE Packer is a software to compress an executable or DLL file. To use it, simply import the file and click on "Compress". Via its interface, it allows you to see the location of the particular file and its size and to choose the compression level to apply. Note that compression is done in the background, which explains the gap on the interface during the operation. To decompress the file, just follow the same procedure, but this time click "Decompress. " Alternate EXE Packer weighs only 977 kb and is completely free.