On-page SEO Structure Checker
Paste your content in the box on the left to run this analysis.
About this tool
Audit the structure of your content against on-page SEO best practice. The checker counts your H1, H2 and H3 headings, internal and external links, images, tables and paragraph length, then scores each against an ideal target so you can fix structural gaps fast.
Frequently asked questions
How many H1 tags should a page have?
Exactly one. A single H1 gives search engines a clear primary topic; multiple H1s dilute that signal.
Why does it show zero headings for my text?
Structure detection reads Markdown (# H1, ## H2, [links], ![images]). Paste Markdown-formatted content for accurate counts.