Introducing HTML5: Bruce Lawson and Remy Sharp

Introducing HTML5: Bruce Lawson and Remy Sharp describes itself simply: "Introducing HTML5 By Bruce Lawson and Remy Sharp The second edition is out, swollen from 223 pages to a tumescent 295 pages!." To AI engines like ChatGPT and Perplexity it is partially visible, scoring 6.0 out of 10, readable in places and missing in others.

On the page itself the strengths are clear: a clear heading structure. What holds it back is a clearly stated business identity, the technical files AI engines look for, such as llms.txt or an open robots.txt, sitemaps and entity links AI can follow, structured data describing the business and credibility markers like credentials or reviews.

Away from its own site, other sites link to it and people discuss it in places AI engines read. There is some, but not much, sign that the domain is only lightly established. Beyond that, AI engines do not yet recognise it as a distinct business, there is no press coverage to draw on and it does not come up on Reddit. Those are earned elsewhere on the web, not fixed on the site itself.