Skip to content

F09 · Base checks

Semantic & navigable structure

Single h1, heading hierarchy, nav landmark, internal links

Why it is checked

Checks that your page uses proper headings and navigation (one h1, h2/h3 sections, a nav landmark) so engines can segment and understand your content.

How it counts

Scored. It carries 12 of the 100 points of the base score. A check that does not apply to your site leaves the pool, so it never counts against you. A scored check that could not be verified is different: the whole check is then reported as incomplete and no base score is shown, because a score missing part of its evidence would mislead.

How results read

The wording below is exactly what a report shows for each result.

  • Passed

    In this check, your site looks good on this point — no action needed.

  • Needs attention

    In this check, we found something that weakens this signal. It is not fatal, but fixing it makes your site easier for AI answer engines to use — see the suggested steps below.

  • Failed

    In this check, this item did not pass and it directly weakens how AI engines read your site. We recommend fixing it — see the suggested steps below.

  • Not applicable

    This check does not apply to the type of site we detected, so it is not part of your assessment.

  • Couldn't verify

    We could not determine this item in this check — the available evidence is not enough to tell why. No conclusion is drawn either way.

How to fix it

Fix steps depend on what the check actually finds on your site, so they appear in your report next to this item, together with the evidence. Rule templates only — no AI model writes them.