YHWP

Overview

YHWP is a free, open-source desktop app that lets you view, edit, and export HWP / HWPX documents to PDF — without Hancom Office. It runs with the same experience on macOS, Windows, and Linux.

YHWP parses and renders HWP/HWPX files directly, so no Hancom Office install or license is needed. Everything is processed locally on your own PC — no telemetry, no document uploads, ever.

A built-in web viewer lets you preview HWP files right in your browser — open one instantly at hwp.youngsam.net, no install required.

Key Features

1. Open HWP / HWPX

• Supports both the standard HWP 5.x binary format and HWPX (Open HWP)
• Renders paragraphs, tables, images, footnotes, headers/footers, and shapes
• Automatic Korean font substitution (fonts missing from your system fall back to close matches)

2. Lightweight Editing

• Type, delete, copy, and paste text
• Basic formatting (bold, italic, underline, alignment, font size)
• Insert and reposition tables and images

3. PDF Export & Printing

• One-click PDF conversion — fonts and images preserved as-is
• Print with page-range selection
• Perfect for handing off an HWP to someone on another OS — just convert to PDF

4. Drag & Drop · Multi-Window

• Drop an HWP file onto the app icon or window to open it instantly
• Compare multiple documents side by side in separate windows

5. Light & Dark Themes

• Automatically detects your system theme
• Editor color tokens adapt to dark mode for comfortable late-night work

6. Preview on the Web

• The same rendering engine powers the browser preview at hwp.youngsam.net
• Great for trying it before installing or sharing a link with a colleague

7. Open Source · Free · No Tracking

• Source code is public (GitHub) — anyone can audit or contribute
• No ads, no telemetry, no document uploads
• The network is used only to check GitHub release metadata for auto-updates

Who It's For

• Mac or Linux users who occasionally receive HWP documents and need to open them
• Anyone reluctant to buy a new Hancom Office license
• People who frequently convert HWP files to PDF to send to others
• Environments where corporate security policy forbids uploading documents to the cloud
• Developers, researchers, and public-sector staff who prefer open-source tools

How YHWP Compares

Download Options

Every build is automatically built and signed by GitHub Actions and distributed via GitHub Releases. The download button always points to the latest stable release (it uses the latest/download path).

Install in Under 3 Minutes

Windows · MSI

1. Download YHWP-windows-x64.msi and double-click it
2. If SmartScreen warns you, choose "More info → Run anyway"
3. After installing, launch "YHWP" from the Start menu

macOS · DMG

1. Download and mount YHWP-macos-arm64.dmg
2. Drag the YHWP icon into your Applications folder
3. On first launch, right-click → "Open" to get past Gatekeeper

Linux · DEB / RPM / AppImage

# Ubuntu / Debian
sudo dpkg -i YHWP-linux-x64.deb

# RHEL / Fedora
sudo rpm -i YHWP-linux-x64.rpm

# AppImage (all distros)
chmod +x YHWP-linux-x64.AppImage
./YHWP-linux-x64.AppImage

Verify Your Download Is Authentic

All release assets are built automatically by a GitHub Actions workflow and can be hash-verified.

# Windows (PowerShell)
Get-FileHash YHWP-windows-x64.msi -Algorithm SHA256

# macOS / Linux (Terminal)
shasum -a 256 YHWP-macos-arm64.dmg
sha256sum YHWP-linux-x64.deb

System Requirements

Frequently Asked Questions

Do I need Hancom Office?

No. YHWP parses and renders HWP/HWPX files directly, so it works even on machines without Hancom Office installed. YHWP is a separate open-source project, independent of Hancom Office.

Are my documents sent anywhere?

Never. All processing happens locally on your PC. The network is used only to check GitHub release metadata for auto-updates — document contents are never transmitted.

How far does editing go?

It supports text entry and deletion, basic formatting, table editing, and image insertion. Hancom-only advanced features (macros, form controls, etc.) are displayed but may be limited for editing.

What's the difference between the web viewer and the desktop app?

The core rendering engine is identical. The web viewer is optimized for quick previews with no install, while the desktop app adds full workflow features like editing, PDF export, and multiple windows.

Can I use it commercially?

Yes. It's distributed under an open-source license and is free for both personal and business use.

Technical Specifications