Next.js

Next.js – JSON-LD Guide

How to render JSON-LD structured data in App Router with safety notes.

Overview

Guide to implementing JSON-LD structured data in Next.js applications for improved SEO and AI understanding. JSON-LD helps search engines and AI systems understand page structure beyond pure content, describing entities like people, events, organizations, products, and more. The guide covers proper implementation with security considerations.

Key Points

JSON-LD helps search engines understand page structure

Renders structured data as script tags in layout or page components

Supports various entity types (person, event, organization, product)

Requires proper sanitization to prevent XSS vulnerabilities

Can be validated with Google Rich Results Test

Supports TypeScript typing with community packages

Prerequisites

Next.js 13+ with App Router

Understanding of structured data concepts

Basic knowledge of JSON and schema.org vocabulary

Step-by-Step Guide

1Create JSON-LD object with proper schema.org structure

2Use JSON.stringify to convert object to string

3Sanitize HTML tags to prevent XSS attacks

4Add script tag with type application/ld+json

5Validate with Google Rich Results Test

6Test with Schema Markup Validator