Uncompressed DOCX Files
A standard DOCX file uses ZIP Deflate compression to minimize file size. However, the OpenXML specification allows for uncompressed (ZIP_STORED) archives as well. While rare, these files are fully valid and often generated by memory-constrained embedded systems.
These files are critical for testing decompression bomb (Zip Bomb) protections. If your security scanner blindly unzips files into memory without checking the compression ratio, an uncompressed archive might falsely trigger a Zip Bomb alert, causing valid files to be blocked.
Uncompressed
spytm_Uncompressed.docx35.8 KB
A valid DOCX file where the internal ZIP stream uses zero compression (`ZIP_STORED`), making it significantly larger on disk but much faster to parse.
Frequently Asked Questions
Use Cases
- Tuning decompression bomb (Zip Bomb) heuristics to avoid false positives on `ZIP_STORED` archives.
- Testing streaming extraction speed (uncompressed zips extract significantly faster but consume more bandwidth).
- Validating that document re-savers or normalizers correctly recompress the file to Deflate upon saving.