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JitWord Open-Sources doc2docx for One-Click .doc to .docx Conversion

By 徐小夕 ·
Read original on juejin.cn ↗ Google Translate ↗ Alt translation

Legacy .doc files block modern web-based collaboration and AI document workflows. This open-source tool gives teams a straightforward way to migrate them into editable .docx without manual re-save or transcription, a real bottleneck many enterprises face.

Summary

doc2docx converts Word 97-2003 binary .doc files to OOXML .docx format. The conversion is automatic and lossless enough for layout, images, headers, and footers to survive. Once converted, the files can be previewed and edited in JitWord's collaborative document environment, where teams can work on them in real time, track revisions, and compare versions, all from a browser.

The npm package takes a practical approach to platform support: during installation, it detects the host operating system and pulls the matching binary package automatically, so developers don't have to pick a variant. This removes a common install-time headache. The tool is designed for the large archives of .doc files still held by government and enterprise organizations that want to bring them into online collaboration and AI knowledge pipelines.

Takeaways
— doc2docx converts Word 97-2003 binary .doc files to OOXML .docx.
— The conversion preserves layout, images, headers, and footers, avoiding common data loss.
— After conversion, files become editable in JitWord's collaborative document system, supporting real-time co-editing, revision tracking, and document comparison.
— Integration requires just three steps, and the npm package auto-detects the operating system to install the correct platform-specific binary.
— Supported on mainstream operating systems (Windows, macOS, Linux).
Conclusions

The auto-detection of the host OS during npm install is a small but often overlooked detail that makes cross-platform tooling much friendlier.

Large inventory of legacy .doc files is a widespread problem in government and enterprise settings, and replacing manual conversion with an automated library addresses a real operational cost.

Concepts & terms
.doc
A legacy binary file format used by Microsoft Word versions 97-2003. It is closed and complex to parse, and lacks open interoperability.
.docx
The modern, XML-based (OOXML) Word document format introduced in Office 2007. It is open, widely supported, and easier to process programmatically.
OOXML
Office Open XML, the standardized XML-based format used by Microsoft Office documents like .docx, designed for broad compatibility.
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