Unhwp 0.5.1

Unhwp

High-performance .NET library for extracting HWP/HWPX Korean word processor documents to Markdown.

Installation

dotnet add package Unhwp

Or via NuGet Package Manager:

Install-Package Unhwp

Quick Start

using Unhwp;

// Simple conversion
string markdown = UnhwpConverter.ToMarkdown("document.hwp");
Console.WriteLine(markdown);

// Extract plain text
string text = UnhwpConverter.ExtractText("document.hwp");

// Full parsing with images
using var result = UnhwpConverter.Parse("document.hwp");
Console.WriteLine(result.Markdown);
Console.WriteLine($"Sections: {result.SectionCount}");
Console.WriteLine($"Paragraphs: {result.ParagraphCount}");

// Save images
foreach (var img in result.Images)
{
 img.Save($"output/{img.Name}");
}

Features

• Fast: Native Rust library with zero-copy parsing
• Complete: Extracts text, tables, images, and document structure
• Clean Output: Optional cleanup pipeline for polished Markdown
• Format Support: HWP 5.0, HWPX, and HWP 3.x (legacy)

API Reference

UnhwpConverter (Static Class)

Properties

• Version - Gets the library version string
• SupportedFormats - Gets a description of supported formats

Methods

DetectFormat(string path) -> DocumentFormat

Detect the format of a document file.

var format = UnhwpConverter.DetectFormat("document.hwp");
if (format == DocumentFormat.Hwp5)
 Console.WriteLine("HWP 5.0 format");

Parse(string path, RenderOptions? options = null) -> ParseResult

Parse a document with full access to content and images.

using var result = UnhwpConverter.Parse("document.hwp");
Console.WriteLine(result.Markdown);
Console.WriteLine(result.Text);
foreach (var img in result.Images)
 Console.WriteLine($"{img.Name}: {img.Data.Length} bytes");

ParseBytes(byte[] data, RenderOptions? options = null) -> ParseResult

Parse a document from byte array.

byte[] documentBytes = File.ReadAllBytes("document.hwp");
using var result = UnhwpConverter.ParseBytes(documentBytes);
Console.WriteLine(result.Markdown);

ToMarkdown(string path) -> string

Convert an HWP/HWPX document to Markdown.

string markdown = UnhwpConverter.ToMarkdown("document.hwp");

ToMarkdownWithCleanup(string path, CleanupOptions? options = null) -> string

Convert with optional cleanup.

string markdown = UnhwpConverter.ToMarkdownWithCleanup(
 "document.hwp",
 CleanupOptions.Aggressive
);

ExtractText(string path) -> string

Extract plain text content.

string text = UnhwpConverter.ExtractText("document.hwp");

Classes

ParseResult

Result of parsing a document. Implements IDisposable.

Properties:

• Markdown - Rendered Markdown content
• Text - Plain text content
• RawContent - Content without cleanup
• SectionCount - Number of sections
• ParagraphCount - Number of paragraphs
• ImageCount - Number of images
• Images - List of extracted images

RenderOptions

Options for Markdown rendering.

var opts = new RenderOptions
{
 IncludeFrontmatter = true,
 ImagePathPrefix = "images/",
 TableFallback = TableFallback.Html,
 PreserveLineBreaks = false,
 EscapeSpecialChars = true
};

CleanupOptions

Options for output cleanup.

// Presets
var minimal = CleanupOptions.Minimal;
var defaultOpts = CleanupOptions.Default;
var aggressive = CleanupOptions.Aggressive;
var disabled = CleanupOptions.Disabled;

// Custom
var custom = new CleanupOptions
{
 Enabled = true,
 Preset = CleanupPreset.Default,
 DetectMojibake = true,
 PreserveFrontmatter = true
};

UnhwpImage

Represents an extracted image.

Properties:

• Name - Image filename
• Data - Image data as byte array

Methods:

• Save(string path) - Save image to file

Enums

DocumentFormat

• Unknown - Unknown format
• Hwp5 - HWP 5.0 binary format
• Hwpx - HWPX XML format
• Hwp3 - HWP 3.x legacy format

TableFallback

• Markdown - Render as Markdown tables
• Html - Render as HTML tables
• Text - Render as plain text

CleanupPreset

• Minimal - Minimal cleanup
• Default - Balanced cleanup
• Aggressive - Maximum cleanup

Platform Support

• Windows (x64)
• Linux (x64)
• macOS (x64, ARM64)

Target Frameworks

• .NET 6.0, 7.0, 8.0, 10.0
• .NET Standard 2.0, 2.1

License

MIT License - see for details.

Links

• GitHub Repository
• Rust Crate
• Python Package