seo-checklist

# SEO & GEO Checklist ## Metadata Basics - **Page `<title>`:** Unique, descriptive, ≤60 characters (fits Google SERP). For React/Next: use dynamic `<title>` tag or Next.js `metadata` export. - **Meta description:** 120–160 characters, clearly summarizes page value. Should answer "why visit this page?" - **Canonical URL:** Prevents duplicate-content penalties. Set `<link rel="canonical" href="...">` or via Next.js `metadata.metadataBase`. - **Open Graph tags:** For social sharing and preview cards. Include `og:title`, `og:description`, `og:image` (1200×630 px recommended), `og:url`, `og:type`. - **Twitter Card tags:** `twitter:card`, `twitter:title`, `twitter:description`, `twitter:image` for Twitter/X sharing preview. ## Structured Data (JSON-LD) - **Format:** Use JSON-LD in `<script type="application/ld+json">` blocks (preferred by both Google and modern LLM crawlers). - **Schema types:** Choose applicable types: `Organization` (company info), `Article` (blog posts/news), `Product` (e-commerce), `BreadcrumbList` (site navigation), `FAQPage` (Q&A content). - **Why it matters:** Enables Google rich results (star ratings, recipes, job listings) AND helps LLM crawlers understand semantic structure for more accurate citations/excerpts. - **Validation:** Test with [schema.org](https://schema.org) examples and Google's Rich Results Test. ## Technical SEO - **Sitemap.xml:** Submit to search engines via robots.txt or Search Console. For Next.js: use `next-sitemap` or manually g...