https://validator.w3.org/nu/?doc=https%3A%2F%2Fspecification...
I don't get the goal of the website. It's averted as a specification, but to spec what ?! Everything is sourced to another "source of truth".
I saw this posted on LinkedIn[1], where the author wrote:
> I got tired of pointing at six different sources to back a single recommendation. WHATWG for HTML. WCAG for accessibility. IETF for headers. schema.org for structured data. MDN, web.dev, Google Search Central for everything else.
> There was no single, opinionated, platform-agnostic spec for "what does a modern website actually need to do?"
> So I wrote one.
[1] https://www.linkedin.com/posts/jdevalk_the-website-specifica...
It's a compilation of best practices, and valuable as a one-stop-shop and checklist.