What is a schema markup checker?

A schema markup checker is a tool that validates structured data on web pages. It extracts and validates JSON-LD, Microdata, and RDFa markup to ensure it conforms to Schema.org standards and is eligible for rich results in search engines.

What makes this schema checker different from others?

Our schema checker supports bulk URL checking, multiple bot user agents (Googlebot, Bingbot, AI crawlers like GPTBot and ClaudeBot), and compares how different bots see your structured data. Most validators only check one URL at a time with a single user agent.

What structured data formats does this tool support?

This tool validates all three major structured data formats: JSON-LD (recommended by Google), Microdata, and RDFa. It extracts and validates each format separately, showing you exactly what search engines and bots can see.

Can I check how AI bots see my schema markup?

Yes! Our tool includes user agents for major AI crawlers including GPTBot (OpenAI), ClaudeBot (Anthropic), PerplexityBot, and many others. You can compare how different bots see your structured data to ensure consistent visibility.

Bulk Schema Markup Checker

Enter one or more URLs to extract and validate JSON-LD, Microdata, and RDFa. Compare results across different crawler user agents.

Single URL

Bulk Check

Compare Bots

Code Snippet

User Agent:

Full JavaScript Rendering: We use a headless browser to fully render your page, executing all JavaScript before extracting schema markup. This ensures we detect schemas loaded dynamically by React, Vue, Next.js, Angular, and other frameworks—exactly as search engines see them.

Enter up to 10 URLs (one per line):

User Agent:

Compare how different bots see your schema markup:

Select bots to compare:

Googlebot Bingbot GPTBot ClaudeBot Chrome Facebook Twitter

Paste your JSON-LD, Microdata, or RDFa code to validate:

Why Use Our Schema Checker?

Multiple Bot Support

Test with 50+ user agents including Google, Bing, AI crawlers (GPTBot, ClaudeBot), and social media bots.

Bulk Checking

Check up to 10 URLs at once. Perfect for auditing entire sections of your website.

Bot Comparison

Compare how different bots see your structured data. Detect cloaking issues or bot-specific content.

Rich Results Check

See which rich result types your schemas are eligible for based on Google's requirements.

Frequently Asked Questions

What is structured data?

Structured data is a standardized format for providing information about a page and classifying the page content. Search engines use it to understand your content better and display rich results like star ratings, FAQs, recipes, and more in search results.

What's the difference between JSON-LD, Microdata, and RDFa?

These are three formats for adding structured data to web pages. JSON-LD (recommended by Google) uses JavaScript notation in a script tag. Microdata uses HTML attributes. RDFa also uses HTML attributes but with different syntax. All three are valid, but JSON-LD is easiest to implement and maintain.

Why check with different bot user agents?

Some websites serve different content to different bots (cloaking). By checking your schema with multiple user agents, you can ensure consistent structured data visibility. This is especially important with the rise of AI crawlers that may be served different content.

What are rich results?

Rich results are enhanced search results that include visual elements beyond the standard blue link. Examples include star ratings, FAQ dropdowns, recipe cards, event listings, and more. Proper schema markup makes your pages eligible for these enhanced displays.

What is JavaScript rendering for schema checking?

JavaScript rendering uses a headless browser to execute JavaScript on a page before checking for schema markup. This is essential for Single Page Applications (SPAs) built with React, Vue, Next.js, or Angular that load schema dynamically via JavaScript.

Which Google bots should I test with?

Start with Googlebot (Desktop) and Googlebot (Mobile) as these are the primary crawlers. For e-commerce, also test with Storebot-Google. If you're concerned about AI training, check Google-Extended which can be blocked separately without affecting search indexing.