PDF playground
The TileDown PDF engine (MarkdownPDF), compiled to WebAssembly, running in your browser. Type Markdown; it renders a real PDF. No server.
Rendering a PDF live needs a one-time ~18 MB download of the Swift engine, compiled to WebAssembly. Nothing loads until you ask.
This page downloads a ~18 MB gzipped WebAssembly build of the pure-Swift MarkdownPDF engine (+ MathTypeset). The Markdown goes in, a PDF comes out, entirely client-side. Western text uses the built-in base-14 fonts.