Heading & H1 Structure Checker
Analyze any page's H1–H6 hierarchy for free, no sign-in. See the full heading tree and catch missing H1s, skipped levels, and other structural issues that affect SEO and accessibility.
Check a page's heading structure
Free, no sign-in required. Enter a URL and we'll extract every H1–H6 tag in document order.
Bulk heading check
Pro feature — sign in and upgrade to check up to 300pages' heading structure at once.
How the heading checker works
- Fetch the page — we request the URL you enter and read its raw HTML response, the same way a search crawler does.
- Extract headings — every H1 through H6 tag is pulled out in document order, with its text and character count.
- Check the hierarchy — we look for a missing or duplicated H1, levels that skip a step, empty headings, and headings that run long.
- Show the tree — headings render as an indented, color-coded structure so you can see exactly how the page is organized at a glance.
Why heading structure matters for SEO
Your heading hierarchy is one of the clearest on-page signals you control, and it's free to get right:
Content hierarchy signals
Search engines use your headings to understand how topics and subtopics relate. A clean H1 → H2 → H3 structure tells Google exactly how the page is organized.
Keyword targeting
Your H1 should carry the page's primary keyword, H2s the secondary ones, and H3s the supporting subtopics — a natural way to distribute relevance across a page.
Featured snippets
Google frequently pulls snippet content from well-structured H2/H3 sections that directly answer a question. Clear structure improves your odds of winning that spot.
AI search citations
AI search tools parse pages at the passage level. Descriptive H2s and H3s effectively label each passage, making it easier for AI models to find and cite the right section.
Accessibility
Screen reader users navigate by heading level. A logical, sequential structure (per WCAG guidelines) is the difference between a page that's easy to navigate and one that isn't.
Heading structure best practices
- One H1 per page— use it for the page's main title, and include the primary keyword.
- Sequential order — go H1 → H2 → H3 without skipping levels. Stepping back up (H3 → H2) to start a new section is fine.
- Descriptive text— every heading should describe its section. Avoid generic labels like "Introduction".
- Reasonable length — keep headings under roughly 70 characters so they stay scannable.
- Not for styling — use CSS to make text bigger or bolder. Reserve heading tags for actual document structure.
Heading & H1 checker: FAQ
Every H1 through H6 tag on the page, in the order they appear in the HTML, along with each heading's text and character count.
Not strictly — HTML5 technically allows multiple H1s inside separate sectioning elements. In practice, one H1 per page is still the safer default for both SEO and screen-reader navigation, so we flag extra H1s as a warning rather than a hard error.
Jumping more than one level deeper than the deepest level seen so far — for example, going from an H2 straight to an H4 with no H3 in between. Stepping back up (H3 to H2) to start a new section is fine.
Headings at 70 characters or more are flagged as a warning. They're not invalid, but shorter, scannable headings tend to read better and carry keyword relevance more clearly.
No — this tool reads the page's raw HTML response only, the same way a fast crawler would. Headings injected client-side after the page loads won't show up here.
Fix any errors first (a missing H1 is the most important), then work through warnings — skipped levels, empty headings, and overly long text. If you want the full picture beyond headings, run the page through our Website SEO Analyzer too.
Single-page checks are free with no sign-in. Bulk checking (up to 300 URLs at once) is a Pro feature (₹499/month) — sign in with Google and upgrade to unlock it.
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