What this checks
- Missing H1
- Multiple competing H1 tags
- Vague or template-style headings
- Mismatch between H1, title tag and page intent
SEO · H1 tag checker
H1 tag checker
An H1 tag checker finds the main HTML heading exposed by a public webpage and flags missing or confusing heading structure. Enter a URL to see the detected H1 and review whether it clearly describes the page's primary purpose. The tag supports structure and comprehension, but it is only one relevance signal.
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Paid reports include direct founder help. If a finding is unclear, send it with the page, evidence and suggested fix attached, and Richard will explain what to do next.
Heading first pass
Checks H1 count, H1 text quality and title/H1 alignment from the public HTML.Public pages only. No account, no card, no worker job.
Why it matters
- The H1 is often the clearest visible statement of page purpose.
- AI-generated pages commonly reuse generic headings across templates.
- Search engines and visitors both benefit from a clear page hierarchy.
How to use it
Use the checker above to catch missing, duplicated or weak H1 signals. A full PageLens AI scan reviews heading clarity across every important page.
Get Quick Report — $1Example result
What a free seo check can surface.
Example H1 result
Two H1 tags found — review the page focus
The page exposes two competing top-level headings. Keep the product promise as the H1, move the supporting headline to H2, and align the title tag with the same intent.
- H1 count
- 2 found
- First H1
- Ship your site with confidence
- Second H1
- Website audit tools for startups
- Title alignment
- Partial match
<main>
<h1>Ship your site with confidence</h1>
<section>
<h1>Website audit tools for startups</h1>
</section>
</main>What the full scan adds
- Desktop and mobile screenshots for every priority finding.
- Severity, owner impact and fix acceptance criteria.
- Markdown repair prompts for Cursor, Codex, Lovable, Bolt and other builders.
- Re-scan proof when the page improves.
Copy-paste fix prompt
Review this page for H1 tag checker. Start with this finding: "Missing H1". Make the smallest production-safe fix, preserve the existing design, then list verification steps for desktop, mobile and crawler-visible HTML.
Upgrade path
Free Growth Baseline
$0
First visible signal
Quick Report
$1
Every finding on one page
Full Report
$9
Exports and one verification re-scan
Checker workflow
Find, count and verify the heading in four steps.
Step 1
Find the H1 text
Fetch the crawler-readable page and show the exact text inside every H1 element instead of guessing from visual font size.
Step 2
Count H1 tags
Confirm whether the page has zero, one or several H1 elements and flag structures that deserve a manual review.
Step 3
Check title alignment
Compare the H1 with the title tag and page purpose so both visitors and search systems receive one consistent promise.
Step 4
Inspect the HTML evidence
Use the returned source snippet to find the component or template that needs changing, then verify the rendered heading tree.
What the result means
Use the checker above to catch missing, duplicated or weak H1 signals. A full PageLens AI scan reviews heading clarity across every important page.
Limits of this check
The check cannot judge search intent or writing quality perfectly, and JavaScript may change the final heading tree. Review the rendered page and accessibility tree when the structure is complex.
Why the H1 is still a useful SEO and UX signal
An H1 tag checker reviews the main visible heading on a page. While modern search engines can understand pages without perfect heading structure, the H1 is still a simple, high-signal clue for visitors, crawlers and AI answer systems. It tells them what this page is mainly about before they read the rest of the content.
Good H1 text is specific and aligned with intent. A homepage can state the core product promise. A feature page should name the feature or outcome. A blog post should match the answer it provides. Problems appear when pages have no H1, multiple competing H1s, headings hidden inside visual components or generic copy such as 'Welcome' that says nothing about the page.
Run this check after cloning templates, generating pages with AI builders or shipping a redesign. If your title tag, meta description and H1 all tell the same clear story, search snippets and human first impressions become much stronger.
Frequently asked.
- What does an H1 tag checker do?
- It reviews whether a public page has a clear main heading and flags common issues such as missing H1s, multiple competing H1s or vague headings.
- Should every page have only one H1?
- One clear H1 is the safest default for marketing and product pages. HTML allows more complex structures, but multiple H1s often create unnecessary ambiguity.
- Does the H1 affect SEO?
- The H1 is not a magic ranking factor, but it helps search engines and visitors understand page intent. It works best when aligned with the title tag and visible content.
- What makes a good H1?
- A good H1 is specific, readable and page-unique. It names the topic, product, audience or outcome instead of relying on vague brand language.