SEO030 · Heading order
Severity: info
What it checks
Section titled “What it checks”Flags a heading whose level jumps more than one step over the previous heading (for example <h2> directly followed by <h4>). Presence of a single <h1> is covered by SEO027.
Why it matters
Section titled “Why it matters”Skipping a heading level breaks the document outline that search engines and assistive technology rely on to understand page structure.
How to fix
Section titled “How to fix”<h1>Page title</h1><h2>Section</h2><h3>Subsection</h3>