UPX Tool v1.0.3 (unofficial 1.1.1)

webfork on 23 Feb 2016
  • 274KB (uncompressed)
  • Suggested by Gary

UPX is a tool that can reduce the size of system files (EXE and DLL) significantly. No additional software is required after compression and some programs will even run faster due to fewer read operations.

UPX Tool is a GUI wrapper for UPX, able to both compress and decompress.

There is an unofficial update created by Lupo PenSuite (UPX Tool+ 1.1.1) that can be download here. The main advantage of this update is functionality with UPX 3.0 (improved compression via LZMA).

System Requirements: Win95 / Win98 / WinME / WinNT / Win2K / WinXP / Vista / Win7
Writes settings to: Application folder
Stealth: ? Yes
Unicode support: No
License: Freeware/Open Source
How to extract:
  1. Download the ZIP package and extract to a folder of your choice
  2. The version of UPX included in bin\upx.exe is not the latest version, so you may wish to replace it with the latest version from the UPX website
  3. Launch UPXTool.exe

    Note: I have included a direct download of UPX Tool packaged with the latest version of UPX. Just click on the "download here" link above.
Similar/alternative apps: PortableApps AppCompactor

9 comments on UPX Tool  The Portable Freeware Collection Latest Entries Feed

Ben 2008-02-01 02:11

UPX Tool+ 1.1 is no longer directly linked on the Lupo PenSuite site, but it is still available in the full download of the PenSuite package (along with about 150MB packed of other programs): http://www.lupopensuite.com/download.htm

cicom3nd3z 2008-10-14 04:45

I use this frontend:

Portable and with nice features.

a 2008-11-24 17:03

UPX tool is just too simple for me. I've been using Free UPX. http://www.pazera-software.com/products/free-upx/ (also portable with nice features.)

Whistler 2009-03-15 13:40

@a: Isn't Free UPX just another graphical front end for UPX? So, should you be saying "UPX Shell is just too simple" rather than UPX Tool? Just curious.

Whistler 2009-03-15 13:53

@a: Just tried Free UPX. It's neat. Likewise, I prefer it to UPX Shell because it provides more options / information on the main screen. Good heads up on that. Thanks.

KingMudkip 2009-10-27 17:40

Is there any reason I shouldn't use this on my apps?

Lupo73 2010-02-11 11:32

The link to UPX Tool+ is fixed..

carbonize 2010-02-11 15:27

Just remember that programs compressed using UPX will get reported as a virus by some anti virus software.

Have to love false positives and lazy programmers.

Irgen 2010-11-20 02:41

ClamWin report "Trojan.Spy-75883 FOUND";Avira report:"TR/PSW.Agent.nup";Please check; and scan with online malware scanner almost report virus

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