Schema Markup Validator

How the Schema Markup Validator Works

This tool fetches a webpage and extracts all structured data embedded in it. Here's the process:

1. Choose an input, fetch a public URL or paste JSON-LD for browser-only parsing without a server request.
2. JSON-LD extraction, it finds all <script type="application/ld+json"> blocks, parses the JSON, and handles @graph arrays.
3. Type detection, the tool lists the @type values it can parse, including types inside @graph.
4. Common property checks, built-in rules flag selected gaps on frequently used types. These checks are not a complete implementation of the Schema.org vocabulary or every Google search feature.
5. Microdata scan, the tool also detects schema.org Microdata markup embedded in HTML attributes.

Why Schema Markup Matters for SEO and GEO

Structured data can make visible facts easier to interpret consistently. It is one layer of a broader search and entity strategy:

• Search-feature eligibility, supported types with valid properties can make a page eligible for breadcrumbs, products, events, articles, and other enhanced results. Display is never guaranteed.
• Entity clarity, stable identifiers and consistent Organization, Person, Product, or LocalBusiness facts can reduce ambiguity when they match the page and external profiles.
• Maintenance, structured fields make stale prices, ratings, authors, and dates easier to audit systematically.
• AI-search foundation, machine-readable facts may help systems interpret a source, but markup alone does not establish expertise or earn citations. Measure real prompts and cited URLs separately.

Schema works alongside your SEO and Open Graph tags ; together, they provide explicit metadata for different consumers. Need to generate a starting point? Use the Schema Markup Generator, then adapt it to the visible page and validate it. For a broader technical audit, the AI Search Readiness Checker reviews schema alongside crawler controls, headings, and standard discovery signals.

Want to go deeper? Our blog covers the full structured data topic: what schema markup is and why it matters for SEO explains the fundamentals and which types your site needs. How schema helps your business earn AI citations covers the growing role of structured data in ChatGPT, Perplexity, and Google AI Overviews. And our guide to testing and validating schema markup walks through the complete validation workflow from pre-publish checks to quarterly audits.

Google Retired the Structured Data Testing Tool. Here's What to Use Now.

For years, the Structured Data Testing Tool was the way to check schema markup: paste a URL, see every type on the page, fix what's flagged. Google announced its deprecation in 2020, and in 2021 handed it over to Schema.org, where it survives as validator.schema.org without the Google-specific checks site owners relied on.

The replacements each cover only part of what the original did:

In short: use the Rich Results Test to confirm a specific rich result, and use a general schema checker like this one for a quick live-page inventory. No validator can predict an AI citation. For the complete validation workflow, read our guide to testing schema markup.

Common Schema Types, Chosen by Page

There is no universal checklist. Choose the narrowest types that accurately describe the visible page:

• Organization, your business name, logo, URL, social profiles. The foundation of your online identity in search.
• WebSite, site name, URL, and publisher identity.
• BreadcrumbList, a real navigation path (Home → Category → Page) that can support breadcrumb display.
• Article / BlogPosting, for editorial content with visible author and accurate publication dates.
• FAQPage, only for visible FAQ content that complies with current search policies. Google limits FAQ rich results mainly to authoritative government and health sites.
• WebApplication, for tool pages (like this one). Describes the app, its category, pricing, and provider.
• Product, for product pages. Requires name, image, and offers for rich results with pricing.
• Service, for service pages. Describes what you offer, the provider, and the service area.

Schema Type Reference: Properties to Review

Different consumers and search features have different requirements. Use this as a starting reference, then confirm the current requirements for the specific feature in Google's documentation and validate the general vocabulary at Schema.org.

Requirements can change. Valid markup can make eligible content understandable; it does not guarantee a rich result, ranking, Knowledge Graph panel, voice answer, or AI citation.