HTML Heading Checker for H1–H6 Tags
Enter a public URL or paste HTML to see the headings in order. The checker flags missing main headings, empty tags, and skipped levels such as H2 followed by H4.
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Instructions
How to use it
Follow these steps in the workspace above.
- Enter a live webpage URL or paste raw HTML markup into the analyzer.
- Inspect the extracted H1-H6 hierarchy tree and automated structural diagnostics.
- Fix flagged heading skips or missing H1 tags to strengthen topical clarity for Google and assistive technologies.
Guide
How it works
A heading tells readers what the next section is about. Screen reader users can browse those headings to find the section they need. Use CSS to change a heading’s size without changing its level.
How to read the heading outline
- Use a clear H1 to name the page. Use H2 for its main sections and H3 for subsections.
- If an H4 follows an H2, check whether that section belongs at H3.
- Give each heading enough detail to make sense on its own in a screen reader’s headings list.
Want to inspect meta tags, security headers, and SSL alongside your headings? Run our comprehensive Website SEO & Security Audit.
While Google has stated that HTML5 pages with multiple H1s can still be parsed, using a single, focused H1 tag remains the clearest signal of primary topical intent for search engines, AI parsers, and screen readers.
Skipping heading levels breaks the logical document outline for screen-reader users who navigate by heading level, violating WCAG accessibility best practices and muddying topical hierarchy.
Avoid wrapping global navbars, sidebars, or footer menus in H2/H3 tags, as doing so pollutes every page’s semantic outline with site-wide boilerplate instead of page-specific topics.
