Free Web Structure & H1-H6 Analyzer: Audit Heading Hierarchy & DOM

100% free online tool available in English and Spanish. Audit your H1-H6 heading cascade, HTML5 semantic structure, text-to-code ratio, and internal links without any subscription.

• Detection of missing H1 or pages with conflicting multiple H1s.
• Visual cascading tree view of all heading levels.
• Alerts on illogical jumps that confuse AI parsers and search bots.
• Plain text vs. HTML code ratio calculation.
• Inspection of modern HTML5 semantic elements.