SEOStructured Data (JSON-LD) là cách mark up content để Google hiểu semantic context và show Rich Snippets — tăng CTR đáng kể không cần thay đổi ranking. Format phổ biến: JSON-LD trong <script type='application/ld+json'>.
Lợi ích: Rich Snippets — kết quả tìm kiếm đặc biệt với rating stars, price, availability, FAQ accordion, breadcrumbs, sitelinks. CTR tăng 20-30% với rich snippets. Schema phổ biến cho frontend: Article (blog), Product (e-commerce), FAQPage (FAQ), BreadcrumbList (breadcrumbs), Organization (company info), WebSite (search box trong Google). Trong Next.js: tạo component <JsonLd> render <script> tag với JSON.stringify(data). Validate bằng Google Rich Results Test.
Structured Data (JSON-LD) marks up content so Google understands semantic context and displays Rich Snippets — increasing CTR significantly without needing to change ranking. The most common format: JSON-LD embedded in a <script type='application/ld+json'> tag.
Benefits: Rich Snippets — enhanced search results featuring star ratings, price, availability, FAQ accordions, breadcrumbs, and sitelinks. Rich snippets can increase CTR by 20-30%. Common schemas for frontend developers: Article (blog), Product (e-commerce), FAQPage (FAQ sections), BreadcrumbList (breadcrumbs), Organization (company info), WebSite (Google sitelinks search box). In Next.js: create a <JsonLd> component that renders a <script> tag with JSON.stringify(data). Validate using Google's Rich Results Test.