Heading Structure Checker
Analyze your HTML heading structure for SEO. Check H1-H6 hierarchy, find missing headings, and ensure proper semantic structure.
How to Check HTML Heading Structure
- 1 Paste your HTML content into the input area
- 2 Click Analyze Structure to scan the headings
- 3 Review the heading hierarchy visualization
- 4 Check for any issues like missing H1 or skipped levels
- 5 View statistics showing heading counts by level
- 6 Follow the best practices to fix any problems
Frequently Asked Questions
Is my code or data stored anywhere? ▼
No. All developer tools process data locally in your browser. Nothing is sent to any server or logged.
Can I use these tools offline? ▼
Yes! After the initial page load, most developer tools work without an internet connection.
Are there API limits? ▼
No limits. Since processing happens in your browser, you can use the tools as much as you need.
Is the output compatible with production use? ▼
Yes. Our tools produce standard-compliant output suitable for production environments.
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Last updated: January 15, 2026 · v2.1