Heading Structure Checker
Paste your page's HTML to see its heading structure as a clear outline. The checker flags a missing or extra H1, skipped levels, empty headings and duplicates.
How to check your headings
- Open your page in a browser, right-click and choose View page source.
- Copy everything and paste it into the box.
- Read the outline. It should read like a table of contents for the page.
- Fix the warnings in your page builder, then check again.
Heading best practices
| Rule | Why |
|---|---|
| One H1 per page | Clearly states the main topic |
| H2 for main sections, H3 inside them | Creates a logical outline |
| Do not skip levels | Helps screen reader users navigate |
| Use headings for structure, not styling | Change size with CSS instead |
| Descriptive wording | Readers and search engines scan headings |
Common page builder issue
Page builders like Elementor make it easy to pick a heading tag just for its size. That often creates several H1s, or headings used for small labels. Set the HTML tag of each heading widget on purpose, and use text widgets for labels and taglines.
Related tools
Score the whole page with the SEO content score checker, write a title with the meta title generator, and plan articles with the blog outline generator.
More free tools and guides
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Frequently Asked Questions
Is this heading structure checker free?
Yes. It is free with no sign-up, and your HTML stays in your browser.
Can a page have more than one H1?
HTML allows it and Google says it is fine, but one clear H1 is the simplest and most accessible choice.
Do headings help SEO?
Yes. Clear headings help search engines and readers understand the structure and topics of your page.
Why can I not just enter a URL?
Browsers block reading other websites directly for security, so pasting the source keeps the tool private and reliable.