Free SEO Audit Tool for HTML Structure, Heading Flow, and Content Gaps
Run the free diagnostic above, then upgrade to the AI Fix-it Brief — our primary path for turning audit findings into ranked, surgical content changes.
Visualizing Your SEO Structure
Your page's H1–H3 flow is one of the clearest signals search engines use to understand what the page is about. When headings drift away from the target topic or bury important terms too deep in the body copy, the page becomes harder to classify and less likely to rank well. This audit shows how those layers connect, surfaces where keyword coverage is weak, and reports internal link signals so you can see whether the page is reinforcing the topic properly.
Finding Content Gaps
Good SEO is not just about writing more text. It is about covering the right subtopics, using the right terms, and making sure the page answers the likely questions a searcher has. This audit helps identify missing sections, thin areas, and places where the page could better support its main keyword with stronger topical coverage.
From Audit to Fix
The free run gives you a clear diagnostic: structure, gaps, and risk signals you can share with stakeholders. The next step — the AI Fix-it Brief — turns that diagnostic into a concrete repair plan with heading rewrites, section improvements, keyword placement recommendations, and internal link suggestions. That makes the tool useful not just for seeing the problem, but for fixing it.
Frequently asked questions
What is Content Spine Analysis?
Content Spine Analysis is the way this tool evaluates how your H1–H3 hierarchy, supporting headings, and emphasis support your target keyword and related entities. It shows whether the page structure matches the intent you want search engines to infer.
Why does structure matter more than body copy alone?
Headings and page structure weigh heavily in how search engines interpret a page. Strong body copy helps, but if the structure is weak or misaligned, the page may still be hard to classify correctly.
How does the AI Fix-it Brief help?
Most SEO audit tools just give you a "Failure Checklist." The AI Fix-it Brief gives you specifics as it converts the audit into specific edits: heading rewrites, section merges, anchor text ideas, and keyword placement guidance. It gives you a practical next step instead of just raw diagnostics.