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
Check whether a public page has one clear H1 that describes the page topic for visitors, search engines and AI answer systems.
Ask Richard about your report
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.
Run complete launch scanExample result
What a free seo check can surface.
Review before launch
Missing H1
The free tool gives you a visible first-pass signal. A paid PageLens AI report adds page evidence, severity, screenshots, ownership context and a scoped repair prompt.
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
Full One-Page
$1
Every finding on one page
Launch Pack
$29
15 pages plus re-scan proof
Target keyword: H1 tag checker
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.