OpenDocument Text (ODT) stores text and formatting as a zipped ODF XML archive, the ISO-standardised open alternative to DOCX. HWP file (HWP) stores data in the HWP format. This conversion changes the file's encoding, compression method, and supported feature set. Text content, headings, and basic formatting are transferred; complex features such as macros or embedded objects may not translate fully. The result is a standard HWP file readable by any compatible application. 1converter handles ODT-to-HWP conversion server-side: files are uploaded over HTTPS, processed on isolated cloud infrastructure, and the converted output is available for download for 24 hours before automatic deletion. No account is required for standard conversions.