Skip to main content
SlapMyWeb
Get started
Skip to tool
SEO tools/All tools
SEO

Heading Tag Checker

Analyze the H1-H6 heading hierarchy of any page. Detect missing H1s, duplicate headings, skipped levels and structural issues.

What is Heading Tag Checker?

The Heading Tag Checker is a free SEO tool that extracts and analyzes the complete H1 through H6 heading structure of any web page. Proper heading hierarchy is one of the most fundamental on-page SEO signals. Search engines use headings to understand page structure and topic hierarchy. This tool fetches the page, extracts every heading tag in document order, and then checks for common issues: missing H1 tags, multiple H1s, skipped heading levels (like jumping from H1 to H3), empty headings, and overly long headings. The results are displayed as a color-coded visual tree that makes structural problems immediately obvious.

How to Use Heading Tag Checker

  1. 1

    Enter a URL

    Paste any web page URL. The tool adds https:// automatically if you skip it.

  2. 2

    Click Analyze

    The tool fetches the page server-side and extracts every H1-H6 heading tag in the order they appear in the HTML.

  3. 3

    Check the stats

    See the total heading count and breakdown by level. A well-structured page typically has 1 H1, several H2s, and H3s under each H2.

  4. 4

    Review issues

    Errors (red) are critical problems like missing H1. Warnings (yellow) are best-practice violations. Notices (blue) are suggestions.

  5. 5

    Study the hierarchy tree

    The indented color-coded tree shows the heading structure. Each level is indented further and color-coded so you can spot where the hierarchy breaks.

Features

  • Color-coded heading hierarchy tree (H1-H6 each with a unique color)
  • Detects missing H1 (critical SEO error)
  • Warns about multiple H1 tags on the same page
  • Identifies skipped heading levels (e.g., H2 to H4)
  • Flags empty heading tags that contain no text
  • Notices for headings over 70 characters
  • Level distribution bar chart
  • Server-side fetch for accurate heading extraction

Related Tools

Meta Tag Generator

Create perfect SEO meta tags with OG + Twitter cards. Live character counters.

Open tool

Meta Tag Analyzer

Analyze any URL's meta tags, OG tags, Twitter cards and SEO elements with scoring.

Open tool

Open Graph Tag Generator

Generate Open Graph meta tags with live Facebook and LinkedIn preview.

Open tool

Open Graph Checker

Check any URL's Open Graph tags and preview how links appear on social media.

Open tool

Twitter Card Generator

Generate Twitter Card meta tags with live preview for summary and large image cards.

Open tool

Robots.txt Generator

Build a robots.txt file with a visual editor. Add rules for any user agent.

Open tool
See all SEO tools

Frequently Asked Questions

Why is the H1 tag so important for SEO?+
The H1 tag tells search engines what the main topic of the page is. It is the most important heading on the page and should contain your primary keyword. Google uses H1 as a strong signal for page relevance. Every page should have exactly one H1 tag.
Is it bad to have multiple H1 tags?+
While HTML5 technically allows multiple H1 tags in different sectioning elements, SEO best practice is to use exactly one H1 per page. Multiple H1s dilute the topical signal and can confuse search engines about the primary focus of the page.
What does "skipped heading level" mean?+
Heading levels should follow a logical hierarchy: H1, then H2, then H3, and so on. Jumping from H1 to H3 without an H2 in between breaks the document outline. Screen readers and search engines both rely on proper heading hierarchy to understand content structure.
How many headings should a page have?+
There is no fixed number, but a well-structured blog post typically has 1 H1, 3-8 H2s for main sections, and H3s for subsections. The key is logical structure, not quantity. Every heading should add meaning and help readers scan the content.
Do heading tags affect Google rankings?+
Yes. Google has confirmed that heading tags help them understand page structure and content. While they are not the strongest ranking factor, proper heading structure improves crawlability, accessibility, and user experience — all of which contribute to better rankings.
Should I put keywords in my headings?+
Yes, but naturally. Your H1 should include your primary keyword. H2s and H3s should include related keywords and variations. Avoid keyword stuffing — headings should read naturally and accurately describe the section content.
Does this tool check JavaScript-rendered headings?+
No, this tool fetches the raw HTML response. If your headings are rendered by JavaScript after page load, they may not appear in the results. Most server-rendered frameworks (Next.js, Nuxt, etc.) include headings in the initial HTML.