No specific info about version 3.1. Please visit the main page of PECompact on Software Informer.
Protect your software from illegal copying and modification.
Compress executable files (type EXE) or DLL-files.
Convert entire web site into single compressed executable file.
Provide Win32 EXE file packing and to protect them against reverse engineering.
Pack your program and third-party dependencies in a single executable file
This utility is easy-to-use and has a user friendly interface.