I hadn’t planned to do this today, but I just added a new filter to pandoc-lecturenotes https://github.com/mxpiotrowski/pandoc-lecturenotes, which allows you to produce slides in any of the formats supported by #Pandoc , such as reveal.js or, ugh, PowerPoint (in addition to Deckset).
(If you missed it, see my recent blog post https://dynalabs.de/mxp/blog/2025-12-29 for the backstory.)