asciidoctor. Its available in many package managers, and also
as a Ruby gem.
You will also need the
asciidoctor. That link includes a
README.adoc with installation instructions.
Actually, I prefer my version of the backend, but that’s me; it has a couple small tweaks to the title slide.
That should create a
slides.html file with everything you need!
I like using Github and the
gh-pages branch system for this.