Simple headings, paragraphs, emphasis, and links often convert well with HTML to Markdown. Tables, embedded media, complex nested lists, and custom styling need closer review.
Compare the source page with a Markdown preview, checking heading hierarchy, link destinations, image alt text, code blocks, and reading order. Remove leftover HTML only if the destination supports a cleaner equivalent. Do not assume that a syntactically valid Markdown file preserves every meaning or interaction from the original page.
For an important article, review section by section before publishing.