HWP to PDF

Convert Korean HWP / HWPX documents to PDF (and optionally Markdown) the moment they land in your vault — fully offline. Conversion runs through a Rust + WebAssembly renderer (@rhwp/core), so no external server, upload, or API key is involved. Your documents never leave your machine.

Features

• Automatic conversion when an .hwp / .hwpx file is added (or run it manually via the command palette).

• Three output styles, chosen in settings:

  Output	Colour & photos	Searchable	Size
  Image-based PDF	exact, like the original	yes (invisible text layer)	large
  Text-based PDF	black & white, no photos	yes, pixel-perfect highlights	tiny
  Markdown note	—	yes	very small

  Image-based PDFs embed an invisible text layer (each run horizontally scaled to match the page image) so they are searchable with well-aligned highlights. Markdown reconstructs paragraphs and tables (merged cells become HTML tables).

• Offline & private — everything runs locally via WebAssembly.

• Korean / English UI — follows your app language.

Settings

• PDF conversion mode — image-based, text-based, or none.
• Markdown note — also extract the text as a .md note.
• Convert on add — auto-convert new files, or command-only.
• Delete original after conversion — move the source file to the trash.
• Render scale / JPEG quality — image-based PDF resolution and size.

Limitations

• Image-based PDFs are large; text-based PDFs render all text in a single bundled font (NanumGothic) and omit colour and embedded photos.
• Output quality depends on the @rhwp/core renderer; complex tables, equations, or unusual fonts may not be perfectly reproduced.
• Desktop only.

Development

npm install
npm run build   # type-check, then bundle to main.js (WASM + font inlined)

The build inlines the WASM renderer and the font into main.js, so the release ships just main.js, manifest.json, and styles.css.

Credits & licenses

• @rhwp/core — HWP/HWPX WebAssembly renderer (MIT)
• pdf-lib and @pdf-lib/fontkit (MIT)
• NanumGothic font © Naver Corp. (SIL Open Font License 1.1)

This project is released under the MIT License. See LICENSE.