Developer-focused primer on basic SEO: why rankings matter and how to boost them by crafting concise, keyword-rich title tags (55–60 chars), structuring content with clear H1–H6 headings, and writing descriptive 125–150 char alt text; includes a practical workflow (keyword research, content calendar, examples, analytics tracking) and previews advanced tactics like internal links and schema.
Proper heading hierarchy is crucial for accessibility and SEO in HTML. A clear document outline, defined by headings (`<h1>`-`<h6>`) helps users navigate content and aids screen readers and search engines. Neglecting this can lead to accessibility issues, SEO penalties, and user frustration.
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