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A docx plugin for Claude Cowork and Claude Code. Uses 2-5X fewer tokens compared to the Anthropic's docx skill.

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Cowork/Codex DOCX plugin. Uses 2x fewer tokens than the docx skill

Name: Cowork/Codex DOCX plugin. Uses 2x fewer tokens than the docx skill
Availability: InStock
Author: tanin

by tanin·Jun 18, 2026·5 points·6 comments

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AI Analysis

●●SolidBig BrainNiche Gem

Bidirectional docx-html conversion cuts token usage 2-5x versus Anthropic's built-in skill.

Strengths

•HTML as intermediate format lets AI edit documents without code execution.
•Supports tracked changes and comments for legal redlining workflows.
•Works offline with local file processing for privacy.

Weaknesses

•Only works with Claude Cowork and Codex, not other AI assistants.
•Narrow audience limits adoption beyond legal document workflows.

Post Description

Hi HNers,

I'd like to share our DOCX plugin for Cowork and Codex.

It uses 2-5x fewer tokens compared to the traditional docx skill because it doesn't write any code nor execute python/node script. It is also much more reliable.

Our DOCX plugin converts docx<->html bidirectionally. This means AI only operates on HTML. AI is excellent and very efficient when it comes to HTML.

Most libraries (if not all) support docx->html, but none supports html->docx. This is what is novel about our approach.

Here's the demo: https://drive.google.com/file/d/1UNlUJYwkNX3NiANDkLLb3UoRSms...

We've been using it in-house for redlining legal documents, and we love it. If you redline docx files, please give it a try: https://github.com/LegalRabbit-AI/legalrabbit-docx-claude-pl...