Markdown is a good choice for many blog sites. The syntax is much lighter as well as more convenient than HTML, but almost as widely supported. The advantage of writing your posts in Markdown over something unique to your site builder is that you can easily move your content to another site builder as the site evolves. Markdown is a widely supported standard used with site generators, and we are seeing all new generators support Markdown. In fact, many, like Astro, support Markdown out of the box, with no additional configuration needed.