My recommendation would be Jekyll. You can host it for free on a variety of hosts including GitHub (pages) and Vercel. It has support for "data files" which can

My recommendation would be Jekyll. You can host it for free on a variety of hosts including GitHub (pages) and Vercel. It has support for "data files" which can easily be presented as tables. In the case of GH pages, there's built in support for code syntax highlighting and support for embedded mermaid diagrams. For the cases where mermaid is not enough, GH supports SVG format.