I’ve started using HTML for reports recently. But I always use a markdown file as an intermediate and tell the LLM to generate a fancier version of it with SVG for graphs/pictures based on tables in the markdown.
One idea that could be useful for products like Browser Use and Stagehand is instead of using videos of the session, they can use HTML slideshows to show the step-by-step progress of the session. Single file HTMl can be downloaded and shared and annotated as well. I hope someone from those companies are here and will take this advice. I am not advocating for replacing the video sessions but also have the HTML Slideshow as another session artifact.