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Inspect Your Heading Structure
Headings give a page its outline. Search engines and screen readers both use the H1–H6 hierarchy to understand what a page is about and how it is organized. A broken outline — skipped levels, multiple H1s, empty headings — makes content harder to parse for both.
Our Heading Structure Checker fetches any public URL and renders the full H1–H6 tree exactly as the markup defines it, flagging skipped levels, multiple top-level headings, and empty heading tags.
No sign-up, nothing stored, results in seconds.
No need to type http:// — just the domain works. We fetch the page server-side, read its headings, and keep nothing. Public URLs only.
What this tool checks
Heading outline
The complete H1–H6 structure is rendered as a visual tree, so the document outline is visible the way a search engine reads it.
H1 count
The number of H1 tags is reported, since one clear H1 per page is the conventional, well-understood structure.
Skipped levels
Skipped heading levels are detected (for example an H2 followed directly by an H4), because a broken hierarchy weakens the outline.
Empty headings
Empty heading tags are flagged, since a heading with no text contributes structure with no meaning.
Nesting order
The order of headings is checked against a logical hierarchy so out-of-order structure is visible at a glance.
Why it matters for SEO
Heading structure does not carry the ranking weight it once did, but it still matters in two concrete ways. A clean H1–H6 outline helps search engines understand topical structure and extract the right passages for featured snippets. The same outline is what screen-reader users navigate by, so a broken hierarchy is also an accessibility problem — and accessibility increasingly overlaps with how quality is judged. Clear structure is low-effort, durable, and helps both audiences.
How to fix common issues
Multiple H1 tags
Multiple H1s are fixed by keeping one H1 that states the page topic and demoting the rest to H2 or lower. One clear H1 is the safest convention.
Skipped heading level
A skipped level is fixed by not jumping ranks — an H2 section should use H3 for its subsections rather than skipping to H4.
Empty heading
An empty heading is fixed by either giving it real text or removing the tag, since headings used purely for styling break the outline.
No H1 at all
A missing H1 is fixed by adding one heading that clearly names what the page is about, near the top of the main content.
Headings used for styling
Headings chosen for their size are fixed by using CSS for appearance and reserving heading tags for actual document structure.
Frequently asked questions
What is a heading structure checker?
A heading structure checker is a tool that reads a page's H1–H6 tags and shows the document outline, so structural problems like skipped levels are visible without reading source code.
Should a page have only one H1?
One H1 per page is the safest, most widely understood convention. Modern HTML technically allows more, but a single clear H1 removes ambiguity.
Do headings affect SEO rankings?
Headings have limited direct ranking influence today, but a clean outline helps search engines extract passages and snippets and improves accessibility.
What is a skipped heading level?
A skipped heading level is a jump in the hierarchy, such as an H2 followed immediately by an H4, which breaks the logical outline of the page.
Why do empty headings matter?
An empty heading adds a structural node with no content, which confuses the outline for search engines and screen readers alike.
Is this heading checker free?
Our Heading Structure Checker is free, with no sign-up, no limits, and nothing stored. The page you submit is fetched server-side, analyzed, and then discarded.
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