This is just a web page to convert Markdown into PDF. It does that using Pandoc and a customized LaTeX template. The most notable change is the use of the EB Garamond 12 font. Pandoc and LaTeX generates super crisp PDF files. Before I used this approach I converted the Markdown to HTML, and used a web browser to "print" the page to a PDF file. For some reason the fonts are rendered more blurry when taking that route.
This web page is hosted on an old Raspberry Pi, so it is rather slow. Even though this is intended for my personal use, you are free to use it too.
More technical stuff: The LaTeX engine used is XeTeX, the site itself is built using Python and the Flask web framework. It is then served by a reverse proxy built in Go. It's amazing how much tech is used for such a small web site.