Heading Structure Checker
Visualize the full H1–H6 heading hierarchy of any page. Detect skipped levels, missing H1s, and empty headings instantly.
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Why Heading Structure Matters
Headings create the outline of your page. Search engines use them to understand your content hierarchy and topic structure. Screen readers rely on them for navigation. A well-structured heading hierarchy improves both SEO and accessibility — a broken one hurts both.
What Is a Heading Hierarchy?
HTML provides six heading levels (H1 through H6). H1 is the main title, H2 marks major sections, H3 marks subsections, and so on. A correct hierarchy never skips levels — you shouldn't jump from H2 directly to H4, for example. Think of it like a book's table of contents.
Best Practices
- Use exactly one H1 per page — it should describe the page's primary topic.
- Never skip heading levels. H2 should follow H1, H3 should follow H2, etc.
- Write descriptive, keyword-rich headings — they help both users and search engines.
- Keep headings concise. Long headings lose impact and can be truncated in search results.
Common Mistakes
- Multiple H1 tags — dilutes the page's topic signal and confuses search engines.
- Skipping levels (e.g., H2 → H4) — breaks the logical hierarchy and accessibility tree.
- Using headings for styling — if you want big/bold text, use CSS instead of heading tags.
- Empty heading tags — a heading with no text provides no value to users or search engines.