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Heading Hierarchy Scanner — Free Online Tool

H1-H6 structure audit

Paste HTML → analyze heading structure. Missing H1, skipped levels, orphan headings.

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Learn more

Heading hierarchy scanner

How to use this tool

  1. 1

    Paste HTML

    Page source.

  2. 2

    See structure

    Tree + issues.

  3. 3

    Fix heading order

    For SEO + A11y.

Frequently Asked Questions

One H1 rule?
Single H1 per page is traditional — HTML5 allows multiple via sectioning but screen readers + SEO still prefer one H1.

Key Takeaways

  • Heading Hierarchy Scanner is a free, browser-based seo & web tool — h1-h6 structure audit.
  • No signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Heading Hierarchy Scanner

  1. Open the tool: Launch Heading Hierarchy Scanner on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Heading Hierarchy Scanner — Quick Facts

Price
Free — no limits, no watermarks, no paywalls
Privacy
100% browser-based — no data is sent to any server
Platform
Any modern browser on desktop, tablet, or mobile
Category
SEO & Web Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
FeatureDetails
ToolHeading Hierarchy Scanner
CategorySEO & Web
Signup RequiredNo
File UploadNone — processed in browser
Mobile SupportFully responsive
CostFree forever

Why Use Heading Hierarchy Scanner?

You should try Heading Hierarchy Scanner for a quick, private way to h1-h6 structure audit. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.