Heading Structure Checker
SEO tools to rank higher on Google.
What does this tool do?
Skipped heading levels and multiple H1s confuse both screen readers and search engines. Paste any HTML or article content to get a visual heading outline with instant warnings for nesting skips, duplicate H1s and empty headings — fix your document structure in minutes.
Key features
- Google-focused
- Schema generators
- Meta tag tools
- Site auditors
Skipped heading levels and multiple H1s confuse both screen readers and search engines. Paste any HTML or article content to get a visual heading outline with instant warnings for nesting skips, duplicate H1s and empty headings — fix your document structure in minutes.
Paste HTML / Article Content
Analysis
Heading Outline
Outline appears here...
How to Use
- Paste your page HTML or article content into the text box.
- Click Analyze Headings to see the full outline with warnings.
- Fix skipped levels, duplicate H1s and empty headings, then re-check.
Core Features
- 100% free forever — no signup, no paywall, no usage limits.
- Fully client-side: everything runs in your browser; your data never leaves your device.
- No external APIs or servers — works offline once the page loads.
- Mobile-friendly responsive design with instant live results.
Frequently Asked Questions
Why does heading order matter for SEO?
Search engines use headings to understand content hierarchy. Logical H1-H6 nesting helps them identify main topics versus subtopics on the page.
Can I have more than one H1?
HTML5 technically allows it, but best practice — and this checker — recommends exactly one H1 per page for clarity and accessibility.
How to Use Heading Structure Checker
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