UPX is a free, portable executable packer for several executable formats, distributed under the GNU General Public License with full source code. It compresses programs and DLLs, typically reducing file size by around 50%-70%, and compressed programs and libraries remain self-contained. UPX inherits the security context of any files it handles, so it should be used only on trusted files.
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UPX is a free executable file compressor for several executable formats, including Windows programs and DLLs, macOS apps and Linux executables. It typically reduces the file size of programs and DLLs by around 50%-70%, and compressed programs are self-contained. It is distributed under the GNU General Public License with full source code available.
SuperCompression is a website that provides programs, tools, and information related to maximum file compression. It offers utilities such as Ultra7z Archive Optimizer, Ultra FreeArc Optimizer, Ultra RAR Optimizer, UPX Optimizer, and converters for images to JPEG XL and video to AV1/H265/H264 formats, alongside related documentation and posts.