Pandoc

Pandoc is the universal markup converter: a command-line tool for translating documents between over 40 formats.

Pandoc is a robust, open-source document conversion engine, built as a Haskell library and a command-line tool. It operates by parsing an input format (like Markdown, reStructuredText, or HTML) into an Abstract Syntax Tree (AST), then rendering that AST to an output format, which ensures high fidelity across conversions. The tool supports an extensive list of formats, including key business and academic standards: Markdown, LaTeX, Microsoft Word (.docx), PDF (via LaTeX), and EPUB. This architecture makes it indispensable for publishing workflows, allowing a single source file to generate multiple required formats efficiently.

https://pandoc.org