Free Heading Structure Checker
Paste a URL to see its full H1–H6 outline at a glance, and catch the structure mistakes that confuse both readers and search engines — multiple H1s, skipped levels, empty headings. No signup, nothing saved.
Reads the page's main content area — headings in navigation or footers are excluded.
How it works
Paste a URL
We fetch the page and pull every H1–H6 tag from its main content, in the order they appear.
See the outline
Indented by level, exactly like a document outline — the same structure screen readers and search engines use to understand your page.
Catch structural mistakes
Multiple H1s, skipped levels, and empty headings are flagged automatically.
Why heading structure isn't just formatting
Headings aren't just bigger, bolder text — they're a document outline. Screen reader users routinely navigate a page by jumping heading to heading, and a broken outline (a heading that skips from H2 straight to H4, or a page with three H1s) makes that navigation confusing or misleading. Search engines read the same structure to figure out what your page is actually about and how its sections relate to each other.
The practical rules: use exactly one H1 per page — it's the page's main title, not a design element to sprinkle around. Don't skip levels; an H2 section can contain H3 subsections, but jumping an H2 straight to an H4 leaves a gap in the outline that doesn't correspond to anything. And a heading with no text defeats its own purpose — it's a landmark pointing at nothing.
Worth being honest about scope: none of this is a confirmed direct Google ranking factor on its own. But a clean heading structure makes your content easier to scan, easier to feature in a snippet, and easier for both people and machines to parse correctly — which shows up in the metrics that do matter, like time on page and how easily your content gets pulled into search features.
Frequently asked questions
Google has said multiple H1s won't get you penalized, but it's still worth avoiding — a single, clear H1 remains the most reliable signal of what a page's main topic is, both for accessibility tools and for anyone scanning your outline.
Either the page genuinely has none (common on landing pages that only use styled <div> text instead of real heading tags — worth fixing), or the content needs JavaScript to render and this tool couldn't see it in the raw HTML.
There's no confirmed direct ranking penalty for it. It's flagged here because it breaks the logical outline for accessibility tools and makes your structure harder to parse — worth fixing for usability even without a guaranteed ranking effect.
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