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Paste a URL and see the H1–H6 outline that AI and search engines actually read — laid out as an indented tree, with structure problems flagged. Skipped levels, a missing H1, or empty headings quietly confuse the machines deciding whether to quote you.
AUDXY checks structure, content and AI-readability across your whole site — every page, scored, with the fixes that decide whether AI actually quotes you.
Run full AUDXY — free teaser →Headings are the outline of your page. Search engines use the H1–H6 hierarchy to understand what a page is about and how its sections relate; AI answer engines like ChatGPT, Claude and Perplexity lean on the same structure to extract and cite specific passages. A clean hierarchy — one H1, then H2s for sections, H3s nested under them — lets a machine reconstruct your meaning without guessing. When levels are skipped, the H1 is missing, or headings are styled-up paragraphs with no real text, the outline breaks down and your content is harder to read, index, and quote.
Use exactly one H1 that states the page's main topic. Below it, use H2 for each major section, and H3 (then H4…) only to nest sub-points inside a section. Step down one level at a time — never jump from an H2 straight to an H4. Every heading should contain real, descriptive text (not be empty or used purely for visual styling). If you need bigger or bolder text without changing the outline, style it with CSS instead of bumping the heading level. Re-run this check after edits — it reads the live page, so changes show as soon as they're deployed.