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484,361
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30.05.2016 (Monday)

Free UPX 2.0

Graphical interface for the UPX packer. UPX 3.91w, Ultimate Packer for eXecutables, EXE packer

137,160
Free UPX 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 other). It offers easy access to all documented and undocumented UPX parameters without the need for command line usage.
Free UPX 2.0
Release date:26.05.2016
Language: English
License:Freeware
System:XP/2003/Vista/2008/Win7/Win8/Win10
File size:1.9 MB
Additional information
File name:Free_UPX.exe
Exact file size:2 011 136 bytes
PAD file:http://www.pazera-software.com/pad/free-upx.xml
MD4 hash:5EF5B99439A2F6801FFE9FD88F2BA560
MD5 hash:C5EE753D2E9CD51696079F5FB5FA46AF
Views:484,362
Downloads:137,160

How to use the Free UPX - Quick Start

Free UPX 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 other). It offers easy access to all documented and undocumented UPX parameters without the need for command line usage.

The Free UPX interface is very simple and user-friendly. To compress executable files, just drag & drop them into main window, select proper profile from list, and click the Compress button.

Free UPX is designed for UPX 3.91w - the last stable version available in May 2016.

Current version supports 64-bit executable files (Win64/PE), but this feature is declared as experimental.

File list / Basic settings Advanced settings
Compression Filter
  • Compression and decompression of Windows executable files (EXE, DLL, OCX, BPL, CPL, SYS, AX, ACM, DRV, TLB and other).
  • 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 acces to all UPX command-line parameters.
  • Displaying detailed informations about compressed files: original file size, compresson 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 system registry and all settings are stored in INI file, so it can be run from portable drives.
  • Shell integration (optional).
  • 100% freeware! - for private and commercial use. There are no limitations, adware, spyware.
If you no longer use Free UPX application or if you want to free up space on your hard disk, you can uninstall this program from your computer. To do this, follow these steps:
  1. Open Programs and Features by clicking the Start button, clicking Control Panel, clicking Programs, and then clicking Programs and Features.
  2. On the list of installed programs select Free UPX and then click Uninstall. This will launch the uninstall wizard.
  3. Follow the instructions displayed on the screen.
This software is copyrighted by Pazera Jacek company ("Producer") and is protected by copyright laws and international treaty provisions.

This software is provided "as-is" and without warranty of any kind, express, implied or otherwise, including without limitation, any warranty of merchantability or fitness for a particular purpose.

Permission is granted to anyone to use this software for any purpose, including commercial use, but this software can NOT be sold or modified without written permission of the Producer.

This program usu the following open source software:
  1. UPX, licensed under UPX License available at http://upx.sourceforge.net/upx-license.html
Version 2.0 (26 May 2016)
  • Major modifications to the user interface.
  • Displaying additional information about executable files.
  • The ability to filter files based on multiple criteria.
  • Changed toolbar.
  • New icons.
  • New file list control with many additional features (sorting, row and column moving...).
Version 1.7 (7 Oct 2013)
  • New version of the UPX (3.91w).
Version 1.6 (12 Mar 2013)
  • New version of the UPX (3.09w).
  • Minor modifications to source code related to the program adjustment to support the new version of UPX
Version 1.5 (15 Dec 2011)
  • New version of the UPX (3.08w).
  • Minor modifications to source code related to the program adjustment to support the new version of UPX
Version 1.4 (16 Sep 2010)

Version 1.3 (7 May 2010)
  • New version of the UPX (3.05).
Version 1.2 (28 Oct 2009)
  • New version of the UPX (3.04).
  • Support for XP visual styles.
Version 1.1 (1 Jul 2008)
  • New version of the UPX (3.03).
  • Small source code modification.
Version 1.0 (17 Mar 2008)
Initial release.
NoName & versionRelease dateDownload
1. Free UPX 1.5 15.12.2011 http://www.pazera-download.com/old/Free_...
2. Free UPX 1.4 15.09.2010 http://www.pazera-download.com/old/Free_...
3. Free UPX 1.3 07.05.2010 http://www.pazera-download.com/old/Free_...
4. Free UPX 1.2 28.08.2008 http://www.pazera-download.com/old/Free_...
5. Free UPX 1.1 01.07.2008 http://www.pazera-download.com/old/Free_...
6. Free UPX 1.0 01.04.2008 http://www.pazera-download.com/old/Free_...