For the same thing, I use https://zim-wiki.org https://zim-wiki.org and its built in slide exporter. This allows me to keep my content in the same "notebook" f

For the same thing, I use https://zim-wiki.org https://zim-wiki.org and its built in slide exporter. This allows me to keep my content in the same "notebook" for a nice all-in-one experience. It uses the "S5" system, which, I don't know how well that's been maintained, but the CSS was easy enough to modify.