Heading Structure Analyzer

See your page’s outline the way a machine does

Headings are not just big text; they form the outline of a page, and search engines and screen readers both read that outline to understand structure. This analyser reads your HTML and shows the heading hierarchy, so you can see whether it forms a sensible tree or a tangle.

The rules a good hierarchy follows

A well-structured page has exactly one H1 that states what the page is about, and headings that nest without skipping levels: an H3 should sit under an H2, not jump straight from an H1. Multiple H1s confuse the outline; a jump from H1 to H4 leaves a gap that suggests missing structure. The analyser flags these so the outline reads cleanly to both search engines and assistive technology.

Structure is accessibility and SEO at once

A logical heading hierarchy helps search engines grasp what a page covers and how its sections relate, which supports ranking. The same structure lets screen-reader users navigate by heading, jumping between sections instead of reading linearly. Getting the hierarchy right serves both audiences with one fix. The analysis runs in your browser, so your markup is not uploaded.

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