anydoc is a Rust library that converts 14 document formats (Word, PowerPoint, Excel, PDFs, etc.) into clean GitHub-flavored Markdown in milliseconds. It works across Node.js, Python, and the browser via WebAssembly, and benchmarks show it's 200x faster than LibreOffice while scoring higher quality than competing tools. The library parses any format into a shared document model, so tables, headings, and formatting behave consistently regardless of input type.