Next.js 15 SEO: metadata, OG Images, Sitemap, and Structured Data (2026) (opens in new tab)

Next.js 15 App Router handles SEO in TypeScript, co-located with your routes. This guide covers every layer — metadata, OG images, sitemaps, structured data — with real production patterns. Two Ways to Define Metadata Static export — when metadata doesn't depend on fetched data: // app/about/page.tsx import type { Metadata } from 'next' export const metadata: Metadata = { title: 'About Us', description: 'Learn about our team and mission.', openGraph: { title: 'About Us', description: 'Learn a...