When you export HTML slide decks to PowerPoint with python-pptx, you get silent layout drift: footers that overflow, italics that vanish, hero slides that stick to the top instead of centering. This skill walks you through a five-step audit workflow that compares the PPTX dump against the source HTML, catalogs the breaks (footer overflow, cropped content, missing em tags, off-rhythm spacing), then re-exports with a cursor-flow layout discipline that enforces a footer rail and refuses to render slides that would bleed. It's built for the specific pain of maintaining visual fidelity across the HTML to PPTX boundary, where every slide has different intrinsic height and hand-picked coordinates quietly fail.
npx skills add https://github.com/nexu-io/open-design --skill pptx-html-fidelity-audit