Heading Structure Auditor
Paste your HTML or headings and audit your H1-H6 structure for a single H1, skipped levels, and a clean outline that search and AI engines can follow.
Free to use. Enter your email once to copy or download. Runs entirely in your browser.
Paste your HTML or headings
Paste raw HTML, or a plain list of headings (one per line, optionally with leading# marks like Markdown to set the level). The audit updates as you type. Nothing is sent anywhere: this runs entirely in your browser.
Audit result
Text report
Copy the report to share the outline and every issue with its fix. Runs entirely in your browser: nothing is uploaded.
Why heading structure matters
Your headings are the outline of the page. A clean H1-H6 hierarchy tells Google what the page is about and how its sections relate, and it gives AI answer engines a map they can parse instead of guessing. When the outline is clear, both are far more likely to pull the right passage as an answer.
A good H1 is the one thing this h1 checker looks for first: one H1 per page, describing what the page is about in plain words. Everything else nests under it in order, H2 for sections, H3 for points inside a section, and so on, without jumping levels.
Common heading mistakes
The mistakes this heading structure checker flags are the usual ones: no H1 at all, more than one H1, a page that opens on an H2 or H3 instead of the H1, and skipped levels like an H2 followed straight by an H4. Each of those makes the outline harder to follow.
Empty headings and headings used only to style text are the other trap. Run the h1 tag checker above on any page, read the outline it builds, and fix the issues it lists. A tidy structure is one of the cheapest SEO and AEO wins you can ship.
Copy or download your result
Enter your email to export. You'll also get the occasional new free tool and first access when we open our next product to test users. No spam, unsubscribe anytime.
Enter your email below to unlock copy and download.
You're unlocked. Copy and download are enabled, and we'll be in touch when there's something worth your time.
Want this done for your whole site, and tracked over time?
This h1 checker audits one page's headings. Winning across Google and AI answer engines takes clean structure, content, and tracking working together. On a discovery call we map that for your whole site.
Book a Discovery Call