sghtmltopdf

https://github.com/waka/sghtmltopdf

Ruby binding for sghtmltopdf, a successor to wkhtmltopdf: an HTML-to-PDF rendering engine written in Rust that needs no browser process. The engine runs in-process through a native extension and releases the GVL while rendering. On Rails it registers a wicked_pdf compatible renderer, so `render pdf: "invoice"` works with the keys you already use.