Template QA
Compare representative pages after changing a shared article, product, or landing-page template.
On-page SEO tool
Heading Structure Checker
See the document outline exposed by the initial HTML. The checker preserves source order and treats skipped levels or multiple H1 elements as context-dependent review items, not automatic ranking failures.
FreeNo loginNo data stored
Editorial handoff
Review the actual outline before rewriting headings for clarity and navigation.
Accessibility review
Find empty elements or surprising jumps that deserve human inspection alongside the rendered page.
What it checks
Use the result as evidence, not a score.
- H1 through H6 elements in document order
- Visible heading text and empty heading elements
- H1 count
- Skipped heading-level transitions as review evidence
What it cannot check
- Whether headings accurately answer the visitor’s question
- Visual hierarchy created only through styling or client rendering
- Content quality, completeness, search intent, rankings, or AI citations
How it works
Input, inspect, improve, verify.
The tool processes what you enter, shows a plain-language result, and gives you a safer next step. Make the change on your website, deploy it, then test the live page again.
Popular use cases
Useful before and after publishing.
Template QA
Compare representative pages after changing a shared article, product, or landing-page template.
Editorial handoff
Review the actual outline before rewriting headings for clarity and navigation.
Accessibility review
Find empty elements or surprising jumps that deserve human inspection alongside the rendered page.
Pro tips
Small checks that prevent avoidable mistakes.
- Write headings for document structure and scanning before thinking about keywords.
- Keep the primary page topic clear without forcing every page into one rigid outline.
- Review the rendered accessibility tree when client-side code creates content after the initial HTML.
- Do not promote body text into headings merely to change its visual size.
Common issues and solutions
What to review when the result looks wrong.
Several H1 elements appear
Multiple H1 elements can be valid HTML. Confirm whether the resulting page hierarchy remains clear to users and assistive technology.
A level is skipped
Treat the jump as a review prompt rather than a severe SEO defect. Fix it when the document relationship is genuinely unclear.
The visible heading is missing
Inspect whether the label is styled text, generated only by JavaScript, hidden, or absent from the semantic page structure.
Frequently asked questions
Short answers before you make a change.
Must every page have exactly one H1?
One clear primary heading is a useful default, but the checker reports the evidence for review rather than enforcing an invented universal ranking rule.
Do skipped heading levels hurt rankings?
A skipped level is a document-structure clue, not an automatic ranking penalty. Review whether it makes the content harder to navigate or understand.
Does the checker render JavaScript?
No. It inspects pasted HTML or the initial public HTML response. Client-rendered headings may require a rendered-page accessibility check.
Read the practical guide
Headings are document structure, not a keyword checklist
Understand the evidence behind this tool, where its result stops, and the safer next steps to verify on a live page.
Read the guideEvidence · Limitations · Verification