PECompact - Version 1.0 PECompact is a utility that compresses Windows executables to one third their original size, while leaving them 100% functional. PECompact will compress your Windows 9x/NT4/w2k 32-bit Portable Executable (i.e. PE) 'Image' files, OCX files, and Dynamic Link Library (i.e. .DLL) files, or any PE based file type. PECompact compresses the code, data, selected resources, import/export table of a win32 executable and optimizes its structure. Once PECompact compresses a file, it inserts a small piece of code -- a symbiote -- into the PE file that decompresses it at file runtime. Load time can actually be improved in some cases because less data has to be retrieved from the disk or network.