UPX: the Ultimate Packer for eXecutables - HomepageWelcome UPX is a free, secure, portable, extendable, high-performance executable packer for several executable formats. Introduction UPX is an advanced executable file compressor. UPX will typically reduce the file size of programs and DLLs by around 50%-70%, thus reducing disk space, network load times, download times and other distribution and storage costs. Programs and libraries compressed by
