Heading Structure Extractor - Free Online SEO Tool

The Heading Structure Extractor is a free SEO tool that scans your pasted HTML source code and extracts every heading tag from H1 to H6, presenting a clear visual outline of your page's content hierarchy so you can audit it for SEO and accessibility issues.

Key Features

• Paste your full page's HTML source code directly into the tool - no need for a live URL.
• Automatically identifies and lists every heading level from H1 through H6 in the order they appear.
• Flags when a heading level is skipped, such as jumping from an H2 straight to an H4, which can confuse both users and search engine crawlers.
• Alerts you if no H1 tag is found on the page, since every page should have exactly one.
• Detects multiple H1 tags, a common on-page SEO mistake that can dilute topical focus.

How to Use the Tool

Copy the full HTML source of the page you want to audit and paste it into the input box, then run the extractor. The tool parses the code and displays a structured, indented outline of all headings, along with warnings about skipped levels, missing H1 tags, or duplicate H1 tags.

Best Practices

Use a single, descriptive H1 tag per page that clearly states the main topic, and organize subheadings logically using H2 for main sections and H3-H6 for nested subsections. Avoid skipping heading levels purely for stylistic reasons, since screen readers and search engines rely on a logical hierarchy to understand content structure. Regularly auditing heading structure helps improve both accessibility and on-page SEO signals.

Why Use This Tool

A messy or broken heading hierarchy can hurt readability, confuse assistive technologies, and weaken how search engines interpret your content's topical structure. This Heading Structure Extractor gives you an instant, easy-to-read breakdown of your headings so you can quickly spot and fix structural issues before they impact rankings or user experience.