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FUPX Portable

advanced executable compression

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Version 3.2 for Windows, Multilingual
8MB download / 21MB installed
Notes | Antivirus Scan | Details

Runs anywhere (cloud, removable, local) without 'installing'. Use the Platform for easy installs and automatic updates.

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FUPX (formerly 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).

  • Compression and decompression executable files (EXE, DLL, OCX, BPL, CPL, SYS, AX, ACM, DRV, TLB and other).
  • Easy acces to all UPX command-line parameters.
  • Displaying detailed informations about compressed files: original file size, compresson ratio, UPX version, compression level and other.
  • Predefined UPX profiles for beginners. Advanced users can define custom profiles.

App Notes

Helpful Tip: For app releases, we recommend using AppCompactor to shrink apps. It's pre-configured with the settings we recommend for official releases and automatically handles special files according to our recommendations.

False Positive Note: The current UPX 64-bit binary has false positives in a handful of antivirus engines. We've reported the issue to them.


For help with this app, please see the following:

Download Details

FUPX is repackaged with permission from Pazera Software