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Content Structure Analyzer
Free content structure analyzer — check heading hierarchy (H1-H6), word counts per section, and on-page SEO issues. Paste HTML or Markdown for an instant audit.
Paste content above to analyze its structure
This free tool
- Single-page heading hierarchy and word count analysis
- Detects skipped headings, missing H1, and thin sections
- Supports both HTML and Markdown input
Floyi does this better
- Site-wide content structure audit across all pages
- Content gaps identified against your topical map
- Automated on-page recommendations tied to your authority goals
Structure matters for one page. Floyi's Topical Authority Planner measures how well your entire site covers a topic space.
Try Floyi Free →How to Use the Content Structure Analyzer
- Paste your content — HTML source code or Markdown. The tool auto-detects the format.
- Review the heading tree — a visual outline showing your H1 through H6 hierarchy with word counts per section.
- Check for structural issues — the tool flags missing H1 tags, skipped heading levels, duplicate H1s, and thin content sections.
- Review the summary stats — total word count, heading count, and average words per section.
- Fix issues and re-analyze — paste your updated content to verify improvements before publishing.
On-Page SEO and Content Structure
Search engines use heading tags as semantic signals to understand the relationship between topics on a page. A page about "running shoes" with H2 headings for "Best Running Shoes for Beginners," "Trail Running Shoes," and "Running Shoe Sizing Guide" tells Google this is a comprehensive resource covering multiple subtopics. That topical depth, combined with proper HTML semantics, helps pages compete for broader keyword clusters and earn featured snippets for specific subsections.
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Frequently Asked Questions
What content formats are supported?
The analyzer supports both HTML (with heading tags like
<h1> through <h6>) and Markdown (with # heading syntax). It auto-detects the format based on your input. This means you can paste source code directly from your CMS, a Google Doc export, or a Markdown file from your content repository.Why does heading structure matter for SEO?
Heading tags (H1 through H6) create a semantic outline of your page that search engine crawlers use to understand content hierarchy and topical relevance. A well-structured heading tree helps Google identify your main topic, subtopics, and supporting content. Common issues that hurt on-page SEO include: missing H1 tags (every page needs exactly one), skipped heading levels (jumping from H2 to H4), duplicate H1 tags, and sections with very few words under a heading. These issues also impact accessibility — screen readers use heading structure to help visually impaired users navigate your content.
What is a good average words per section?
Most SEO content guidelines recommend 100-300 words per heading section. Sections under 100 words may signal thin content to search engines — content that lacks the depth to satisfy a searcher's query. Short sections can often be expanded with supporting detail, examples, or data, or merged with adjacent sections. That said, some sections (like a brief introduction or a definition) are naturally short. The key is that your overall content depth matches the search intent and competitive SERP landscape for your target keyword.
How does content structure affect readability?
Proper heading structure breaks long-form content into scannable sections, which directly impacts user engagement metrics like time on page and bounce rate. Web readers scan before they read — headings act as signposts that help users find the information they need. Well-structured content also earns featured snippets and passage-based ranking in Google, where Google can surface a specific section of your page as an answer to a query.
Can I analyze multiple pages at once?
This free tool analyzes one page at a time. For site-wide content audits that check heading structure, content depth, and topical coverage across every page on your site, Floyi's Content Audit analyzes your entire domain against your topical map and identifies structural issues at scale.