Undoc 0.5.2

Undoc

High-performance Microsoft Office document extraction to Markdown for .NET.

Installation

dotnet add package Undoc

Usage

Basic Usage

using Undoc;

// Parse a document
using var doc = UndocDocument.ParseFile("document.docx");

// Convert to Markdown
var markdown = doc.ToMarkdown();
Console.WriteLine(markdown);

// Convert to plain text
var text = doc.ToText();

// Convert to JSON
var json = doc.ToJson();

With Markdown Options

using Undoc;

using var doc = UndocDocument.ParseFile("document.xlsx");

var options = new MarkdownOptions
{
 IncludeFrontmatter = true,
 ParagraphSpacing = true
};

var markdown = doc.ToMarkdown(options);

Parse from Bytes

using Undoc;

byte[] data = File.ReadAllBytes("document.pptx");

using var doc = UndocDocument.ParseBytes(data);
var markdown = doc.ToMarkdown();

Extract Resources (Images)

using Undoc;

using var doc = UndocDocument.ParseFile("document.docx");

// Get all resource IDs
var resourceIds = doc.GetResourceIds();

foreach (var id in resourceIds)
{
 // Get resource metadata
 using var info = doc.GetResourceInfo(id);
 var filename = info?.RootElement.GetProperty("filename").GetString();
 Console.WriteLine($"Resource: {filename}");

 // Get resource binary data
 var data = doc.GetResourceData(id);
 if (data != null && filename != null)
 {
 File.WriteAllBytes(filename, data);
 }
}

Document Metadata

using Undoc;

using var doc = UndocDocument.ParseFile("document.docx");

Console.WriteLine($"Title: {doc.Title}");
Console.WriteLine($"Author: {doc.Author}");
Console.WriteLine($"Sections: {doc.SectionCount}");
Console.WriteLine($"Resources: {doc.ResourceCount}");
Console.WriteLine($"Library Version: {UndocDocument.Version}");

Supported Formats

• DOCX - Microsoft Word documents
• XLSX - Microsoft Excel spreadsheets
• PPTX - Microsoft PowerPoint presentations

Features

• RAG-Ready Output: Structured Markdown optimized for RAG/LLM applications
• High Performance: Native Rust implementation via P/Invoke
• Asset Extraction: Images and embedded resources
• Metadata Preservation: Document properties, styles, formatting
• Cross-Platform: Windows, Linux, macOS (Intel & ARM)

API Reference

UndocDocument Class

Static Methods

• ParseFile(string path) - Parse document from file path
• ParseBytes(byte[] data) - Parse document from bytes

Instance Methods

• ToMarkdown(MarkdownOptions? options) - Convert to Markdown
• ToText() - Convert to plain text
• ToJson(bool compact) - Convert to JSON
• PlainText() - Get plain text (fast extraction)
• GetResourceIds() - List of resource IDs
• GetResourceInfo(string id) - Resource metadata as JsonDocument
• GetResourceData(string id) - Resource binary data

Properties

• Title - Document title
• Author - Document author
• SectionCount - Number of sections
• ResourceCount - Number of resources
• Version (static) - Library version

MarkdownOptions Class

• IncludeFrontmatter - Include YAML frontmatter
• EscapeSpecialChars - Escape special characters
• ParagraphSpacing - Add extra paragraph spacing

License

MIT License - see for details.