What this tool does
Heading Structure Checker reviews H1–H6 heading order and page outline quality.
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🏗️ Heading Structure Checker
Paste HTML and audit H1–H6 hierarchy, skipped levels, and missing page headings.
Why it is useful
It helps writers, SEOs, and developers catch skipped levels, duplicate H1s, and confusing document structure.
How it works
The tool reads pasted HTML or heading text and builds a heading outline for review.
Best input
Use rendered page HTML or copied headings from the final content.
SEO tip
Headings should describe content hierarchy for readers first, not just contain keywords.
Privacy note
Manual analysis runs locally. Live URL checks, if used, require fetching the public page URL.
Important limitation
Heading structure is only one content-quality signal and does not guarantee accessibility or search performance.
Quick answers
Can a page have more than one H1?
HTML allows it, but many teams prefer one clear page-level H1.
Do skipped levels matter?
They can make the outline harder to understand, especially for assistive technology users.
Common Use Cases
Audit article outlines
Check whether a blog post or landing page uses a clear H1/H2/H3 hierarchy.
Find accessibility issues
Catch empty headings and skipped levels before publishing.
Summarize page structure for agents
Turn raw HTML into a compact heading outline for analysis.
SEO Suite workflow
Move from pasted page metadata into canonical, heading, link, keyword, page-size, Core Web Vitals, SERP snippet, social-card, and meta-description checks while keeping local-analysis boundaries clear.