remark-rehype bridges the gap between Markdown and HTML by transforming Markdown syntax trees (produced by Remark) into HTML syntax trees (suitable for Rehype). This allows for processing Markdown content and seamlessly integrating it with the Rehype ecosystem for further manipulation like minification, styling, or transforming it into other formats. The package simplifies workflows that require converting Markdown to accessible and well-structured HTML. It's a core component for modern web development leveraging Markdown as a content source.