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Heading Checker

Analyze HTML heading structure (H1-H6) for proper hierarchy and SEO best practices

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About This Tool

Heading Checker analyzes your HTML document's heading structure (H1-H6) for proper hierarchy and SEO best practices. It performs automated checks for H1 count, skipped levels, empty headings, and heading length, then provides a score with a visual hierarchy diagram and exportable outline.

Key Features

Quick Preview

Use Cases

html seo accessibility

Frequently Asked Questions

What is the Heading Checker?

The Heading Checker analyzes your HTML heading structure (H1-H6) for proper hierarchy and SEO best practices, including H1 count, skipped levels, empty headings, and heading length.

What SEO checks does it perform?

It checks for exactly one H1 tag, skipped heading levels, headings exceeding 70 characters, empty heading tags, and whether the first heading is an H1.

How is the score calculated?

The score starts at 100 and deducts points for issues: missing or multiple H1 tags, skipped levels, empty headings, overly long headings, and incorrect first heading.

Can I export the heading outline?

Yes, you can export the heading outline as a text file or copy it to your clipboard using the export buttons below the analysis results.

Is my HTML data sent to any server?

No. All analysis happens locally in your browser using the DOMParser API. Your HTML is never uploaded or transmitted to any server.