Heading Structure Checker

Heading structure is critical for both SEO and accessibility. Search engines use the H1-to-H6 progression to understand page topics and section hierarchy, while screen reader users rely on headings for navigation. Fixing skipped levels or missing H1 tags after publication becomes costly, so quality checks during creation are essential.

Heading Structure Checker extracts H1 to H6 when you paste HTML, visualizes the hierarchy, and detects common issues like missing H1 or jumps from H2 to H4. It can also generate suggested fixed HTML for a faster review workflow.

It is useful for pre-publish CMS reviews, landing page audits, internal content monitoring, and multilingual site consistency checks. It supports both URL input and direct HTML pasting, so drafts and existing pages can be reviewed in the same interface. For related SEO checks, use [Meta Description Checker](/en/seo/meta-description-checker/), [FAQ Schema Generator](/en/seo/faq-schema-generator/), and [Canonical URL Generator](/en/seo/canonical-url-generator/).