Universal document converter between Markdown, HTML, LaTeX/ConTeXt, DOCX/RTF/ODT, EPUB, man/ms roff, DocBook, JATS, TEI, Jupyter notebooks, PowerPoint/reveal.js/Beamer slides, and dozens more formats. Uses external PDF-producing engines (context, latexmk, lualatex, pdflatex, xelatex, wkhtmltopdf, weasyprint, prince, pagedjs-cli, tectonic, pdfroff) to convert into PDF, and preserves metadata, footnotes, tables, math, syntax highlighting, and citations/bibliographies (via CSL) across formats.