Convert DOCX to Markdown in C#

DocxToMarkdownConverter turns a Word document into Markdown: a heading becomes #, a table becomes a pipe table. Images are embedded as data: URIs, so the Markdown stands on its own.

using DocToolkit;

byte[] docx = File.ReadAllBytes("input.docx");
string markdown = DocxToMarkdownConverter.Convert(docx);
File.WriteAllText("output.md", markdown);

What it needs

No browser, headless or otherwise.
No Office install, and no LibreOffice.
No native files: managed code only.
No network at runtime, unless you ask for it.

Good to know

Synchronous: Convert takes the .docx as a byte[] and returns the Markdown as a string.
This is the lossier direction by a wide margin: Word expresses far more than Markdown can.
ConvertWithReport returns the same Markdown and a list of what was lost. An empty list means nothing was lost that the converter knows about.
Images are embedded as data: URIs, not written to files beside the output.

Install

dotnet add package Ank.DocToolkit

NuGet Documentation GitHub

Other conversions

Everything DocToolkit converts