You can build websites already in SVG with no HTML — not even a wrapper page. You just need to configure the web server to serve SVG instead of HTML by default.

You can build websites already in SVG with no HTML — not even a wrapper page. You just need to configure the web server to serve SVG instead of HTML by default. e.g. in Apache: DirectoryIndex index.svg index.html ... You can also embed HTML inside SVG if you want, or HTML in SVG in HTML. I've only tried it for small demos and not seen it (SVG-only sites) used in the wild, but it does work.