Web Accessibility in Next.js: Semantic HTML, ARIA, Focus Management, and axe-core

Accessibility isn't a nice-to-have -- it's legally required in many jurisdictions and expands your potential user base. In Next.js, most accessibility comes for free if you use the right primitives. The Foundation: Semantic HTML The single biggest accessibility win: // Bad -- screen readers can't understand this < div onClick = { handleClick } > Submit </ div > < div className = 'nav' > ... </ div > < div className = 'header' > ... </ div > // Good -- semantic elements have built-in accessibility < button onClick = { handleClick } > Submit </ button > < nav > ... </ nav > < header > ... </ header > < main > ... </ main > < section > ... </ section > < article > ... </ article > < aside > ... </ aside > < footer > ... </ footer > Semantic HTML gives you keyboard navigation, screen reader announcements, and focus management for free. ARIA When Semantics Aren't Enough // Loading state < button aria-busy = { isLoading } disabled = { isLoading } > { isLoading ? ' Saving... ' : ' Save ' } </