If you strictly need a version that runs from a USB drive with no installation, (available via PortableApps.com) is the gold standard. It is open-source, completely free, and compatible with .docx , .xlsx , and .pptx files. Conclusion
While searching for a "portable Microsoft Office 365 highly compressed" version might seem like a great way to save space, the security risks of downloading modified executables usually outweigh the benefits. For most users, using the or a trusted alternative like LibreOffice Portable provides the "extra quality" and portability needed without compromising system safety. If you strictly need a version that runs
However, navigating the world of "portable" and "highly compressed" software requires a clear understanding of what these versions actually are, the risks involved, and the legitimate alternatives available. What is Portable Microsoft Office 365? For most users, using the or a trusted