Free Tool · Heading Structure Analyzer
See your page the way crawlers outline it.
Enter a URL and get the full H1–H6 outline in document order, with every hierarchy mistake flagged — missing H1, skipped levels, empty headings. No signup to try it.
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What the analyzer reads
01 / Outline
Full H1–H6 outline.
Every heading on the page, in the exact order it appears, rendered as an indented document tree.
02 / Single H1
One H1, not zero or three.
Missing H1s leave no primary topic signal; duplicate H1s dilute it. We flag both.
03 / Skipped levels
Skipped levels.
Jumping from H2 straight to H4 breaks the document outline that screen readers and crawlers rely on.
04 / Empty headings
Empty headings.
Heading tags with no text confuse extraction and accessibility tools alike.
05 / First heading
Opens with H1.
A page that starts with an H2 or H3 signals a broken outline before anything else is read.
06 / Score
One structure score.
All five signals weighted into a single 0–100 heading-structure score.