HTML SEO checker
Inspect pasted page HTML for title, description, canonical, and headings.
100% FREE · NO SIGN-UP
Heading structure checker
Inspect the heading order in pasted HTML.
Templates and calculations run locally in your browser. No generative AI or paid API is used. Review results before use.
Check the page your visitors receive
Paste page HTML into the form. The checker reads the markup without executing its scripts. A page that adds headings or images with JavaScript may need its rendered HTML copied from browser developer tools.
A practical example
For a page with an H1 followed by an H3, review whether an H2 section is missing. Use heading levels for structure, rather than choosing them by visual size.
What this tool cannot tell you
Use headings to describe the structure of your content. A skipped level is a review prompt, not an automatic ranking penalty.
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