Content hierarchy audit
Heading Structure Checker
Review every H1 to H6 heading in reading order and detect missing H1s, skipped levels, duplicate text, empty headings, and confusing page outlines.
Tool guide
What is the Heading Structure Checker?
The Heading Structure Checker extracts every H1 through H6 element from a page and displays the hierarchy in reading order. Headings help visitors scan content, support assistive technology, and give search engines useful context about the relationship between sections.
The tool looks for multiple H1 elements, empty or repeated headings, and skipped levels such as moving directly from H1 to H3. A warning does not always mean the page is invalid, but it shows where the document outline may be confusing or harder to maintain.
Audit coverage
What this SEO tool checks
The number and text of H1 headings
The order of H2 through H6 subheadings
Skipped heading levels and empty heading elements
Repeated headings that may reduce clarity
The total heading-to-content balance
Step-by-step
How to use the Heading Structure Checker
- 1Provide the page
Analyze a public URL or paste HTML from a draft or local template.
- 2Generate the outline
The checker lists headings in the same order they appear in the document.
- 3Inspect hierarchy warnings
Confirm that each subheading belongs under the nearest higher-level section.
- 4Edit for people first
Rewrite vague labels such as “More” or “Details” so each heading explains the section below it.
Interpretation
How to understand the results
- A missing H1 suggests the page lacks a clear primary heading, while multiple H1s should be reviewed in context.
- A skipped level is a structural warning, especially when it changes the logical relationship between sections.
- Duplicate headings may be acceptable in repeated components, but unique editorial sections usually deserve unique labels.
Practical advice
SEO best practices
- Use the H1 for the page’s main visible topic and keep it closely aligned with the title tag.
- Use H2 headings for major sections and H3 headings for subsections within an H2.
- Do not choose heading levels only for visual size; use CSS for appearance and HTML for structure.
- Avoid hiding important headings inside images because text headings are easier to understand and access.
- Keep headings descriptive enough to make sense when read as a standalone outline.
Before you act
Limitations of this automated check
The checker evaluates HTML semantics, not the visual design or the actual usefulness of each section. Modern HTML permits more than one H1 in some contexts, but a single clear page-level H1 remains easier to manage for most websites. Content created inside inaccessible iframes or after complex JavaScript rendering may not be included.
Common questions
Heading Structure Checker FAQs
Can a page have more than one H1?
It can, but one clear page-level H1 is usually simpler for users, templates, and audits. Review additional H1 elements to make sure they are intentional.
Does skipping from H2 to H4 hurt rankings?
It is mainly a document-structure and accessibility issue. Fixing the hierarchy can improve clarity, but there is no automatic ranking penalty for one skipped level.
Should navigation headings be included?
Semantic headings in navigation or sidebars may appear in the outline. They should still describe their regions clearly.
Are headings the same as bold text?
No. Bold text changes emphasis, while heading elements define section structure.
Continue your audit