An executable compressor, PEC compresses Windows modules (EXE, DLL, SCR, etc..) substantially, while leaving them able to be run just as anteriorly. At runtime, compressed modules are rapidly decompressed in memory. Smaller (<50%) size usually means quicker load time. PECompact generally compresses files much smaller than if they had been compressed by modern data concentration software such as RAR. This is accomplished by restructuring and pre-processing that make modules more compressible. concentration also adds a layer of security to modules that resists tampering and reverse engineering. PECompact sustains multiple concentration formats, including LZMA, through the use of CODEC plug-ins. Custom loaders (deconcentration) stubs and API hook plugins are also able to be utilized. Advanced configuration includes selection of resource types that should be compressed as well as other parameters that offer a tremendous deal of control over how modules are compressed. A GUI and console mode application that sustains wildcards and directory recursion are included. PECompact is in the software PECompact is a truly modern exe packer / exe compressor.