Heading Analyzer

How to Use the Free Client-Side Heading Analyzer

A page's H1 through H6 tags tell search engines and screen readers how your content is organized, and broken heading hierarchies quietly undermine both SEO and accessibility. This analyzer extracts every heading from your HTML and flags the problems.

1. Copy the HTML of your page and paste it into the input area above.
2. Press the Analyze button to extract all heading tags from the H1 through H6 range.
3. Review the indented tree view for a missing H1, multiple H1s, skipped levels, and other hierarchy issues.
4. Use the flagged issues list to identify problems and improve your heading structure for SEO.

When to Use Heading Analyzer

Heading audits belong in every content workflow, from pre-publication checks to full redesigns. The tool's use cases map directly to those moments: auditing heading structure before publishing content for SEO, checking for missing H1 tags during a website redesign, and ensuring proper heading hierarchy for accessibility compliance. Content writers, SEO specialists, and developers all reach for it when the outline matters more than the prose.

The value comes from seeing structure instead of raw HTML. Structure extraction turns your markup into a readable outline, SEO validation checks for missing H1s, multiple H1s, and skipped levels in one pass, and the visual outline renders everything as an indented tree. The word count view even helps you spot headings that are too long to be concise and SEO-friendly.

Heading Analyzer Tips and Best Practices

1. Use exactly one H1 per page that describes the main topic. Multiple H1s confuse search engines about the primary content, so use H2 and H3 for sub-sections instead.
2. Never jump from H1 directly to H3 without an H2. Skipped levels break the logical content hierarchy, so keep a clean H1 to H2 to H3 progression.
3. Treat the tree view as your source of truth. If a heading renders at the wrong depth, the hierarchy is wrong even when the text looks fine.
4. Check word counts for headings that run long. Concise headings are easier to scan and carry more weight with readers.

Why Client-Side Privacy Matters for Auditing Unpublished Page Markup and Content Hierarchy

When you paste HTML for analysis, you are sharing the actual source of an unpublished page, including copy that has not launched and structure decisions you have not committed to. Sending that markup to a third-party checker exposes draft content and internal organization to someone outside your team.

This analyzer runs entirely in your browser, so your HTML never leaves your device. You can audit unpublished pages, redesigns, and in-progress copy without leaking what is not public yet.