UPX

With UPX, you can confidently compress Windows executables and DLLs to a fraction of their original size. This open-source packer uses secure, lossless compression techniques, ensuring the integrity and performance of the software remain intact. The compressed file behaves identically to the original, decompressing on-the-fly when executed. This results in benefits like faster distribution speeds and reduced disk usage. Being free and versatile, UPX integrates seamlessly into development workflows to create leaner, more efficient software packages.