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Paste a document to check its structure, accessibility basics, and mobile readability. Analysis happens on this page; the Markdown is never submitted to MD HD.
This is a limited Markdown readability signal, not an accessibility audit or a guarantee of rendering quality. It checks parsed headings, paragraph length, link labels, image alternatives, and code fences. Raw HTML, destination availability, and the meaning of alternative text require manual review. Word counts describe prose, not code blocks.
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