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Rule · Document head and metadata

Each page has exactly one non-empty title

SEO-HEAD-01C2 Recommended· w4

Class
C2 Recommended
Weight
4
Severity on fail
major
Applies to
Google

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Scope and evidence

Evaluated on page (P). The book marks this requirement STANDARD, DOCUMENTED RECOMMENDATION (Chapter 44).

Length is never checked. Google: "While there's no limit on how long a <title> element can be, the title link is truncated in Google Search results as needed" (§6). {body_title_clause} = "; a <title> appears in <body> at line {line}, outside the head".

Fail conditions

Each condition has a stable code and a reason template. The evaluator fills the placeholders from observed values only; no sentence in a report is generated.

  • missing

    {url} has no <title> in its <head>{body_title_clause}. Google asks that every page have a title specified in the <title> element, and the HTML Standard expects exactly one title element in the head of an ordinary document.

  • empty

    The <title> of {url} is empty. Google asks that every page have a title specified in the <title> element.

The documented fix

Render one title per page from a per-page field, with a fallback to the page name.

Sources, quoted

These are the passages the rule rests on, stored once in the knowledge base and emitted exactly as written. A citation marked for specific conditions appears only on findings with those codes.