Free online heading analyzer. Extract and analyze H1-H6 heading structure from HTML with hierarchy validation. Detects missing H1, skipped heading levels, multiple H1 tags, and generates an SEO heading score with actionable recommendations. 100% browser-based with zero uploads.
100% browser-based — your data never leaves your device
Extract and analyze heading structure (H1-H6) from any HTML.
Copy the HTML of your page and paste it into the input area above.
Press the Analyze button to extract all heading tags (H1-H6) from the HTML.
Check the indented tree view for missing H1, multiple H1s, skipped levels, and hierarchy issues.
Use the flagged issues list to identify problems and improve your heading structure for SEO.
Drop a file here or click to browse
Ctrl+Enter to analyze
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Heading Analyzer is a free online seo tool that extract and analyze heading structure (h1-h6) from any html. It works entirely in your browser — no downloads, no installations, and no server uploads required. digital marketers, content strategists, web developers use Heading Analyzer when they need a fast, privacy-respecting way to process seo data without installing additional software. It supports capabilities such as structure extraction, seo validation, visual outline. Additional features include word count. Common use cases include audit heading structure before publishing content for seo, check for missing h1 tags during website redesign, ensure proper heading hierarchy for accessibility compliance. All processing happens locally using modern browser APIs, which means your data never leaves your device. This makes Heading Analyzer ideal for working with sensitive data, proprietary code, or any situation where privacy matters.
Heading Analyzer is a free online seo tool that helps you extract and analyze heading structure (h1-h6) from any html. Key capabilities include structure extraction, seo validation, visual outline. All processing is done locally in your browser — no data is uploaded, stored, or shared with any server. There are no sign-ups, no file size limits, and no hidden charges. It is commonly used to audit heading structure before publishing content for seo.
Copy the HTML of your page and paste it into the input area above.
Press the Analyze button to extract all heading tags (H1-H6) from the HTML.
Check the indented tree view for missing H1, multiple H1s, skipped levels, and hierarchy issues.
Use the flagged issues list to identify problems and improve your heading structure for SEO.
| Category | Details |
|---|---|
| Input Limits | Maximum page size: Browser memory bound |
| URL limit: Unlimited | |
| Supported Formats | HTML, XML (sitemaps), Plain text, URLs |
| Browser Engine |
|
All operations run entirely in your browser using built-in SEO APIs. No server uploads, no data storage, and no third-party requests.
Heading Analyzer is ideal when you need to audit heading structure before publishing content for seo without installing software or uploading data to a server. Since everything runs in your browser, there is no setup time and no risk of your data being stored on external servers. For for monitoring live search performance, consider using Google Search Console. For for comprehensive technical SEO crawls, Screaming Frog may be a better fit. Heading Analyzer fills the gap between heavyweight desktop tools and insecure online services that require uploading your data.
No. Heading Analyzer processes everything entirely in your browser using JavaScript. Nothing you type, paste, or upload is ever transmitted to any server. Your data never leaves your device.
A proper heading hierarchy (H1, H2, H3) helps search engines understand your content structure and improves readability. Missing H1s or skipped levels can harm rankings.
Yes. Best practice is one H1 per page that describes the main topic. Multiple H1s can confuse search engines about the primary topic of the page.
Parse HTML and extract all headings into a structured outline.
Check for missing H1, multiple H1s, skipped levels, and other heading issues.
See your heading hierarchy as an indented tree.
View heading word counts for concise, SEO-friendly titles.
Heading Analyzer is useful in a variety of scenarios across different workflows:
Audit heading structure before publishing content for SEO
Check for missing H1 tags during website redesign
Ensure proper heading hierarchy for accessibility compliance
Always use exactly one H1 tag per page that describes the main topic. Multiple H1s can confuse search engines about the primary content.
Never jump from H1 to H3 without an H2 in between. Skipped levels break the logical content hierarchy and harm readability.
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