Korean HWP to PDF Guide

Korean HWP to PDF Conversion Guide

You do not need a paid Hancom Office license to convert HWP / HWPX files to PDF. Here are the 3 practical methods compared by format fidelity, install cost and CLI support.

📄 3 methods · ⚡️ CLI scripts included · 🛡 Keep sensitive docs local⚠️ Free online converter limits: 50–100MB · 2–25 files/day (varies by service)

Conversion presets — one-click tool + options

1. Three conversion methods

🟢 Method 1

Naver Office (MYBOX)

Sign in, drag the file, download PDF. Zero install.

Platform
Web browser (Chrome · Edge · Safari)
Install cost
Free · no install · Naver account required
Format fidelity
★★★★ Excellent Korean font & table, minor drop on complex shadows

Steps

  1. Open https://office.naver.com and sign in
  2. Open MYBOX, click "Upload" and pick your .hwp / .hwpx file
  3. Right-click the file → "Save as PDF"
  4. Download the converted PDF (takes a few seconds)

+ Pros

  • No install, works on mobile browsers too
  • Preserves Korean Batang/Gulim/Malgun fonts almost perfectly
  • Accepts files up to 50MB

− Cons

  • Requires Naver account login
  • File is uploaded to MYBOX — be cautious with sensitive docs
  • Minor position drift on footnotes / complex shapes

Note. For government/internal or PII documents, prefer the local LibreOffice method below instead of upload-based converters.

🔵 Method 2

Hancom Office Viewer (Official, Free)

Hancom’s official free viewer — highest fidelity on Windows.

Platform
Windows 10/11 only (no official macOS/Linux viewer)
Install cost
Free · ~280MB install
Format fidelity
★★★★★ Uses Hancom’s official renderer — no layout break

Steps

  1. Go to hancom.com → Downloads → install "Hancom Office Viewer"
  2. Open the viewer, then open the .hwp / .hwpx file
  3. File → Print (Ctrl+P) → pick printer "Microsoft Print to PDF"
  4. Click Print → choose save location and filename → done

+ Pros

  • Official Hancom renderer — 100% format preservation
  • Combine with "Microsoft Print to PDF" for free PDF export
  • Supports every Hancom format: hwp, hwpx, hwt, hml

− Cons

  • Windows-only (no Mac/Linux build)
  • ~280MB install — heavy for a single conversion
  • GUI-only; inefficient for bulk conversions
🟠 Method 3

LibreOffice (CLI friendly)

100% local · open source · scriptable bulk conversion.

Platform
Windows · macOS · Linux
Install cost
Free · ~330MB install (LGPL open source)
Format fidelity
★★★ Good for hwpx, legacy hwp may break tables/footnotes

Steps

  1. Install from libreoffice.org (macOS: brew install --cask libreoffice)
  2. Run: soffice --headless --convert-to pdf filename.hwpx
  3. PDF appears next to the input (≈3–6 s per 10-page A4 doc)
  4. Batch a folder: for f in *.hwp *.hwpx; do soffice --headless --convert-to pdf "$f"; done

+ Pros

  • 100% local — files never leave your machine
  • Scriptable CLI — batch convert hundreds of files
  • Cross-OS · easy to drop into Docker / CI

− Cons

  • Legacy .hwp (binary) can break tables/footnotes/shapes
  • First run has a ~2–4s Java init delay
  • Missing Korean fonts render as tofu — install system fonts first

Note. On macOS, soffice lives at /Applications/LibreOffice.app/Contents/MacOS/soffice — you may need to add it to PATH.

2. Side-by-side comparison

MethodPlatformInstall costFormat fidelityCLI · batchUploads file?
🟢 Naver OfficeWebFree · no install⭐️⭐️⭐️⭐️✗Yes (MYBOX)
🔵 Hancom ViewerWindowsFree · 280MB⭐️⭐️⭐️⭐️⭐️✗No (local)
🟠 LibreOfficeWin · macOS · LinuxFree · 330MB⭐️⭐️⭐️✓No (local)

Hancom Office Paid vs Free Viewers / Alternatives

Hancom Office Hangul (Paid)

  • ✓ Read + edit + write
  • ✓ 100% fidelity
  • ✗ License $80–250/yr
  • ✗ Windows / macOS only

Hancom Office Viewer (Free)

  • ✓ Free · official Hancom
  • ✓ 100% fidelity
  • ✓ Print to PDF supported
  • ✗ Read-only · Windows only

LibreOffice / Naver Office (Alternatives)

  • ✓ Any OS · CLI conversion
  • ✓ 100% local (PII safe)
  • △ Some legacy hwp drift
  • △ Korean fonts to install

3. LibreOffice CLI scripts

Works on macOS, Linux and Windows (WSL). Copy-paste into your terminal. Great for bulk conversion and CI.

Convert a single file

soffice --headless --convert-to pdf 계약서.hwpx

Creates 계약서.pdf next to the source. Works for .hwpx / .hwp / .hwt.

Convert into a specific output folder

soffice --headless --convert-to pdf --outdir ./pdf 원본.hwpx

Writes ./pdf/원본.pdf (creates the folder if missing).

Batch-convert a folder (Bash)

mkdir -p pdf
for f in *.hwp *.hwpx; do
  [ -e "$f" ] || continue
  soffice --headless --convert-to pdf --outdir pdf "$f"
done

macOS / Linux / WSL. Safe against empty glob via exists check.

Batch-convert a folder (Windows PowerShell)

$soffice = "C:\Program Files\LibreOffice\program\soffice.exe"
New-Item -ItemType Directory -Force -Path .\pdf | Out-Null
Get-ChildItem -Include *.hwp,*.hwpx -File | ForEach-Object {
  & $soffice --headless --convert-to pdf --outdir .\pdf $_.FullName
}

Uses the default LibreOffice install path — edit $soffice if yours differs.

Add soffice to PATH on macOS

echo 'export PATH="/Applications/LibreOffice.app/Contents/MacOS:$PATH"' >> ~/.zshrc
source ~/.zshrc
soffice --version

On macOS LibreOffice is not on PATH by default — register it once.

🛠 Common conversion issues

4. Online converter comparison (with caveats)

These services upload your file to their servers. For government or privacy-sensitive documents, prefer the local LibreOffice method above.

ServicePriceFile limitProsCons
CloudConvertFree 25 min/day, then paidUp to 1GBHuge format matrix, has APIEnglish-only UI, occasional missing Korean fontsVisit →
ZamzarFree 2/day (50MB), paid from $9/moFree 50MB, paid 2GBEmail-based flow, trusted brandFree tier is slow, files retained 24hVisit →
VertopalFree with daily quotaUp to 100MBClean UI, fewer adsReports of missing Korean fonts in outputVisit →
AllInPDFFreeUp to 100MBKorean UI, easy to useHeavy ads, format breakage reportsVisit →
SmallPDF (hwp 미지원)Free limited, paid from $12/moUp to 100MBTop UX and trustDoes not take HWP directly — post-processing onlyVisit →

Caution. Online services upload your files. Retention and encryption differ by vendor — use the local LibreOffice method for government documents, PII and sensitive contracts.

5. Post-conversion quality checklist

Open the converted PDF and quickly verify these items.

📌 Useful alternative tools

Need Korean government HWP forms?

Official HWP form portals for Government24, Supreme Court, National Tax Service, MOEL and more.

Browse form links →

Deep dive: HWP & HWPX format · FAQ · Gov forms