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JavaScript-first, open-source WYSIWYG DOCX editor

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We needed a JS-first WYSIWYG DOCX editor and couldn't find a solid OSS option, most were either commercial or abandoned.As an experiment, we gave Claude Code the OOXML spec, a concrete editor architecture, and a Playwright-based test suite. The agent iterated in a (Ralph) loop over a few nights and produced a working editor from scratch.Core text editing works today. Tables and images are functional but still incomplete. MIT licensed.

HN · launched Feb 9, 2026 · 130 upvotes (top 9%) · 0 views

Niche: text and document editors · 95 launches, 7 in the last 7 days ▼ -46% · Explore this niche →

Category and tags
  • Horizontal
  • Dev tools
  • Developer
  • Not AI
  • Hobby / open-source project

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More like this: all 95 launches in text and document editors →

Could you build this?

Partial While an AI can iterate on code, implementing a robust, spec-compliant WYSIWYG editor for the massive and notoriously complex ISO/IEC 29500 (OOXML DOCX) specification requires deep parser engineering and rigorous layout engine work. Vibe coding can produce initial drafts, but handling arbitrary styling, tables, floating elements, and round-tripping DOCX XML without corruption requires extensive manual domain engineering.

What it would actually take: A complete DOCX WYSIWYG editor requires a custom tree/layout rendering engine in TypeScript, coupled with a robust OOXML parser (handling Open Packaging Conventions, drawingML, wordprocessingML namespaces). It necessitates automated visual regression pipelines comparing rendered canvases against native Word outputs across hundreds of real-world sample documents. The core challenge is matching Word's undocumented pagination, layout quirks, and legacy XML schemas.

Discussion

20 comments analyzed.

Competitors mentioned: LibreOffice, Commercial PDF/DOCX libraries, Browser-native document handling

Concerns raised: Complexity of DOCX spec (5000+ pages) makes full compatibility unrealistic, Undocumented Word behaviors deviate from spec, hard to handle, Last 10% of compatibility requires 90% of work, AI-generated imagery with copyright concerns, Replicating existing functionality as SaaS with added costs

Feature requests: Open source web DOCX editing capability, Live debugging and feedback loop visibility, Unit test harness for document generation validation

Competitors

Other products that read as similar to this one : 206 launches clear the similarity bar, closest 8 shown.

Attention rank: #31 of 207 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 83 days after the earliest competitor.

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.