Schema Markup and Structured Data: A Practical Guide

July 16, 2026 · 8 min read

Schema markup is code, in JSON-LD format, that tells search engines what the content on a page means: whether it's an article, a product, an FAQ or a local business. It doesn't change how the site looks to the user, but it helps Google show rich results (stars, prices, questions, images) and makes content easier for AI assistants to understand too. In short: the more context you give, the more visibility you earn.

The most useful Schema types

Type	What it's for	Best for
Organization / LocalBusiness	Company data, location, contacts	All businesses
Product	Price, availability, reviews	E-commerce
FAQPage	Questions and answers in results	Guides, services
Article / BlogPosting	Author, date, topic	Blogs and content
BreadcrumbList	Navigation path	All sites

How it's implemented

Google's recommended format is JSON-LD, a script placed in the page, separate from the visible content and therefore easy to maintain. The golden rule is a single one: structured data must describe what the user actually sees. Marking up prices or reviews that don't exist violates the guidelines and can lead to penalties, not benefits.

Why it matters for SEO and AI

Structured data is one of the bridges between classic SEO and answer engine optimization: it helps Google generate rich results and gives AI models clear, reliable context about who you are and what you offer. It goes hand in hand with the technical basics of a well-built site, as we explain in our guides on SEO for React sites and Core Web Vitals.

We implement correct structured data in every web development project and as part of our SEO work. If you want to know whether your site uses it well, ask us for an analysis.

Frequently asked questions

What is Schema markup?

It's code in JSON-LD format that tells search engines what a page's content means: whether it's an article, a product, an FAQ or a local business. It helps Google show rich results and makes content easier for AI to understand too.

Does structured data help SEO?

Indirectly, yes. It isn't a direct ranking factor, but it enables rich results (stars, prices, FAQs) that increase visibility and clicks. It also gives search engines and AI assistants context about what you offer.

What format should I use for Schema markup?

Google recommends JSON-LD, a script placed in the page and separate from the visible content. It's the simplest format to implement and maintain compared to the older microdata embedded in HTML.

Can I add fake reviews or prices in Schema?

No. Structured data must describe what the user actually sees on the page. Marking up reviews or prices that don't exist violates Google's guidelines and can lead to penalties rather than benefits.

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