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the easy way to shrink your apps AppCompactor™ allows you to easily compress applications to decrease size on disk and increase performance when running from slow media like flash drives. It's packaged as a portable app, so you can work with your apps anywhere. It's intended primarily for developers, but advanced users will also find it useful.

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Features AppCompactor allows you to easily compress application to decrease size on disk and increase performance when running from a slow media (like flash drives). It features:

  • Proven UPX binary compressor
  • 7-Zip compression of archives
  • Multiple compression levels
  • Automatic testing of compressed files
  • Automatically skips <4K files (no space savings)
  • Add inclusions/exclusions using Format
  • Compression of DLL, EXE, ZIP, JAR, IRC, PYD and BINs in all directories
  • Automatically skip launcher if selecting Format apps' base directory
  • Automatically excludes Visual C++ runtimes and Qt image handlers
  • Saving up to 50% or more installed space of many apps
  • Faster application starts from flash drives
  • The same technology we formerly used in Portable, Pidgin Portable, GIMP Portable and more!

Please mention us and link back here if you use our AppCompactor in your releases as a way of saying thanks. We appreciate it!


osi_certified.pngFor help getting AppCompactor up and running, visit:

Helpful tips:
  • Don't compress NSIS launchers (FirefoxPortable.exe, etc), they'll break
  • It's best to have the app you're compressing reside on a hard drive (at least temporarily) rather than a flash drive to improve performance and decrease writes to your flash drive
  • You can disable the Welcome screen or have the console window stay by editing the settings.ini in the Data directory
  • Only NRV2E should be used for Releases (including development tests and pre-releases) unless it's a small app (one exe and a dll or two) and very easy for you to test every feature and function on every Windows OS.
  • Always back up your files before using this tool as it will not work with all applications.

Download Details

  • Publisher: (John T. Haller)
  • Date updated: 2018-01-29
  • System Requirements: Windows XP/Vista/7/8/10, WINE on Linux/UNIX
  • License: Free / Open Source (GPL)
  • Source Code: AppCompactor (included), UPX, 7-Zip
  • MD5 Hash: 071b031d54271b6dc90c5613f7aac44e