Convertisseur Markdown et Word

Markdown and Microsoft Word serve different purposes in the document ecosystem. Markdown is plain text -- version-controllable, searchable, and portable across platforms and tools. Word (.docx) is the standard format for business documents, with rich formatting, track changes, comments, and collaboration features. Converting between them bridges the gap between developer-friendly writing and business-friendly document sharing.

Common conversion scenarios include: writing documentation in Markdown (for GitHub, wikis) and converting to Word for stakeholders who prefer .docx; receiving a Word document and converting to Markdown for inclusion in a README or documentation site; and writing blog posts in Markdown and converting to Word for editing in a word processor with spell-check and grammar tools. The conversion preserves semantic formatting (headings, lists, tables, links) but may lose some Word-specific features (styles, themes, headers/footers, track changes).

The .docx format is a ZIP archive containing XML files that describe the document's structure, formatting, and content. The docx.js library constructs these XML files in the browser, creating a valid .docx file from structured data. For Markdown-to-Word conversion, the tool first parses the Markdown into an abstract syntax tree (AST) using a Markdown parser, then maps each AST node to the corresponding docx element: headings become Heading paragraphs, bold/italic become Run properties, lists become ListParagraph elements, tables become Table elements with TableCell children.

Markdown-to-Word conversion preserves most formatting accurately: heading levels (H1-H6), bold and italic text, ordered and unordered lists, nested lists, blockquotes, inline code, code blocks, horizontal rules, links, and tables. However, some Markdown features don't have direct Word equivalents: footnotes (Word has footnotes but they require specific document structure), task lists (Word can create checkboxes but with different syntax), and definition lists. These features are converted to their closest Word equivalent.

Word-to-Markdown conversion is more challenging because Word documents contain much richer formatting than Markdown can represent. Font sizes, colors, text alignment, images, shapes, SmartArt, charts, and complex table formatting don't have Markdown equivalents. The converter extracts the semantic structure (headings, lists, tables, links) and basic text formatting (bold, italic) while discarding presentation-specific formatting. Images are extracted as base64 data URIs or saved as separate files.