Heading Structure Checker
Paste HTML to visualise the heading hierarchy (H1–H6) and spot structural SEO issues.
How to Use
- Paste your page HTML (or just the <body> section) into the input.
- Click Analyze to extract the heading tree.
- Review the visual hierarchy and any flagged issues.
- Fix skipped levels, missing H1s, or duplicate H1s before publishing.
Frequently Asked Questions
QHow many H1 tags should a page have?
Ideally one — your primary page title. While Google has said multiple H1s are acceptable, a single clear H1 provides better semantic structure and is the SEO best practice.
QCan I skip heading levels (e.g. H1 → H3)?
You can, but it's bad practice. Skipping levels breaks the document outline and can confuse screen readers. Always go H1 → H2 → H3 in order.
QDoes heading order affect rankings?
Directly, no — but headings help Google understand page structure and content hierarchy, which affects how well your content matches search intent.
About This Tool
A correct heading hierarchy is both an SEO signal and an accessibility requirement (WCAG 2.1). Search engines use headings to understand topic structure; screen readers use them for page navigation.