Accessibility Checks for HTML Slide Decks Before You Share Them as PowerPoint

More and more presentations start life as HTML. Developers build them with reveal.js or Slidev, designers export them from AI tools, and teachers write them in simple web editors. When those decks need to be shared with a wider audience, they are often turned into PowerPoint files so that anyone can open them. That is a good moment to check accessibility, because problems that are easy to fix in HTML can become harder to spot once the slides are a set of images or shapes in a PPTX.

This checklist focuses on the things that matter most for people using screen readers, people with low vision and people who read slides on small screens.

1. Check colour contrast

Low-contrast text is the most common accessibility problem in slide decks. Light grey text on white, or pale text over a photo, may look stylish on a large monitor but becomes unreadable on a projector or phone.…