File created by Ultimate Packer for eXecutables to compress executable files. Contains packed executable file compressed at high ratio. Used to reduce file size for email or external media. Automatically unpacks when executed. Stores unpacked file in memory using in-place technique on some systems.
Markus Oberhumer defined format standard. Used by Windows programs. Belongs to Executable Files category along with 140 other formats.
PeaZip commonly used to work with UPX files. Developed by Giorgio Tani. Website has more on UPX and PeaZip.
Open Source developed for PeaZip software. Most popular in China with Windows 10. Chrome common browser.
Found in Windows operating system. PeaZip handles UPX files. Developer is Giorgio Tani. Can also open UPX files.
When double-clicked, Windows checks filename extension. Opens in associated program if recognized. Shows message to select app if not.
Need software like ULead Photo Express to open. Without it, Windows gives error or prompt to choose app. Right-click and select Open with to pick app.
Can view UPX file directly in browser. Second way is add to Windows Registry to associate with software.
Many files contain only simple text.
Used to edit, convert or print UPX files. Tried to assist with handling these files.
