Add complete page HTML or a smaller content section containing H1 through H6 tags.
✦ On-Page SEO Structure Tool
Free Heading Tag Analyzer for H1 to H6 Structure
Use this free Heading Tag Analyzer to check H1 to H6 tags, detect missing or duplicate headings, identify skipped levels and review your complete HTML heading structure for SEO and accessibility.
Heading hierarchy
Browser analysis
H1
Primary page topic
H2
Main content sections
H3–H6
Nested subsections and supporting structure
Analyze Your H1 to H6 Heading Structure
Add complete page HTML or a content section containing heading tags.
The analysis runs inside your browser. Your HTML is not submitted to a server.
Heading Analysis
Review the heading score, detected issues and document outline.
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OUT OF 100
Waiting for analysis
Paste HTML content and click Analyze Headings.
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Total Headings
0
H1 Tags
0
Detected Issues
No content analyzed
Results will appear after you analyze HTML containing heading tags.
Document Heading Outline
No heading outline generated.
Heading Analysis Report
No report generated.
How It Works
How to Use the Heading Tag Analyzer
Paste your HTML, run the analysis and review practical recommendations for improving hierarchy, accessibility and on-page SEO structure.
The tool checks heading counts, missing or multiple H1 tags, skipped levels, empty headings and duplicates.
Use the score, issue list and visual document outline, then copy or download the complete analysis report.
Best Practices
H1 to H6 Heading Structure Best Practices
Well-organized headings help visitors scan content, improve accessibility and make the document structure easier to understand.
Use a descriptive primary heading that communicates the main topic of the page without unnecessary wording.
Organize main sections with H2 tags and place H3 or lower headings under the appropriate parent section.
Every heading should contain meaningful visible text that introduces or summarizes the content that follows.
Prefer specific headings that tell readers what the section covers instead of vague labels such as “More.”
Duplicate heading text may be valid in some layouts, but repeated labels should be reviewed for clarity.
Do not choose heading tags only for visual size. Use CSS for styling and heading levels for hierarchy.
Frequently Asked Questions
Free Heading Tag Analyzer FAQs
Learn how heading tags affect page organization, readability, accessibility and SEO.
What does the Heading Tag Analyzer check?
It checks H1 through H6 tags, total heading counts, missing or multiple H1 tags, skipped heading levels, empty headings, duplicate text and the full document outline.
Should a page have only one H1 tag?
A single clear H1 is usually the simplest structure for users and search engines. Multiple H1 tags can be valid in some HTML structures, but the hierarchy should remain intentional and easy to understand.
Why should heading levels not be skipped?
A logical sequence improves readability and accessibility. For example, an H2 section should normally contain H3 subsections before moving to H4.
Are duplicate headings always a problem?
Not always. Repeated headings may be appropriate in cards, archives or repeated interface sections, but they should be reviewed to ensure users can distinguish the related content.
Does this tool upload my HTML?
No. The analysis runs inside your browser with JavaScript, so the pasted HTML is processed locally on the page.
Can I analyze only part of a webpage?
Yes. You may paste complete HTML or a smaller section containing the headings you want to review.
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