If you're still chasing this version, it's likely because:
: An authentic Microsoft Office 2013 Professional Plus 64-bit ISO installer is about 769 MB in size. The 32-bit version is slightly smaller but still measures approximately 667 MB. Other sources list the installers at 826.36 MB for 64-bit and 730.56 MB for 32-bit.
A free office suite known for having a very similar interface to MS Office. Conclusion
This is the biggest risk. Cybercriminals know that "highly compressed" searches attract users looking to bypass security and payment. The 100MB .exe file you run is often:
Quick checklist before using any compressed repack ms office 2013 highly compressed 100mb
: Once installed, Office 2013 takes up even more room. Microsoft requires a computer to have 3.0 gigabytes (GB) of available hard disk space for the software to install and run properly. Other hardware requirement sources list even higher figures, at 16 GB for 32-bit and 20 GB for 64-bit systems, though this likely includes operating system overhead.
Inability to open standard .docx or .xlsx files created on newer versions of Office.
: These are small files (sometimes only a few MBs) that, once run, begin downloading the actual software components from a server. While the initial download is small, you will eventually download several gigabytes of data to complete the installation.
Instead of risking a compressed 100MB repack, consider these official options: Office Online (Free) Microsoft 365 on the web If you're still chasing this version, it's likely
It is technically impossible to compress modern office software to that size without breaking it, and the files that claim to do so are almost always malware in disguise.
In theory, high compression uses advanced algorithms (like .7z or .kgb formats) to shrink large installers. While some data can be packed tightly, shrinking a multi-gigabyte productivity suite like Microsoft Office down to 100MB—a 20x reduction—is technically improbable without losing core functionality. The Risks You Should Know
The explosion in size comes from high-resolution assets, complex XML parsing engines, cloud sync features, and security libraries. You cannot put Office 2013 back into an Office 97-sized box.
These track every letter you type, including bank logins. A free office suite known for having a
: You can use Word, Excel, and PowerPoint for free in a web browser via Microsoft 365 . It requires no installation and uses zero disk space.
The compression ratio of 30:1 (3000MB down to 100MB) is technically unsustainable without removing 95% of the application's components. Why Avoid 100MB Compressed Office 2013
Microsoft still provides official offline installers for Office 2013 (support ended April 11, 2023, but it still works). It is 2.5 GB, but you can download it once on a fast connection and save the ISO to a USB drive. Reuse it on multiple PCs without re-downloading.
You do not need to risk infecting your computer to get high-quality office tools. If you are looking for a small download footprint or a free solution, several excellent alternatives match or exceed the capabilities of Office 2013. 1. Microsoft 365 Web Apps (Free)