Splits Markdown into slides at --- lines (fenced code respected) or at headings,...
https://format.halowerk.com/v1/markdown-slidesOverview
Splits Markdown into slides at --- lines (fenced code respected) or at headings, extracts speaker notes (lines after Note:/Notes: and HTML comments), converts slides with marked (raw HTML shown as text, only http/https/mailto links and data: images) and prints them with headless Chrome at 1280x720 or 1024x768 px per slide (scripts off, network blocked). Overfull slides are measured and scaled down to at most 50 %; slides that still overflow are reported. PDF only, no PPTX.