UPX 4.2.4

UPX Overview

This is an advanced graphical interface for the UPX (Ultimate Packer for Executables). It allows you to compress (and decompress) files produced according to Microsoft Portable Executable and COFF Specification (EXE, DLL, OCX, BPL, CPL, and others). It offers easy access to all documented and undocumented UPX parameters without requiring command-line usage.

Features of UPX

Compression and decompression of Windows executable files (EXE, DLL, OCX, BPL, CPL, SYS, AX, ACM, DRV, TLB, and others)
Compression and decompression of ELF executables (used on Unix, Linux, Solaris, FreeBSD, and other operating systems)
Compression and decompression of Mac OS X executable files (Mach-O, FAT)
Easy access to all UPX command-line parameters
Displaying detailed information about compressed files: original file size, compression ratio, saved space, compression level, and other
The ability to filter files based on multiple criteria
Predefined UPX profiles for beginners. Advanced users can define custom profiles
Portability. Free UPX does not use a system registry, and all settings are stored in an INI file so that it can be run from portable drives
Shell integration (optional)