Free schema markup validator

Paste any page address. See its structured data, what's missing, and the JSON-LD to add.

FreeNo sign-upJSON-LD and microdata

Schema markup validatorJSON-LD · microdata

Enter any page address to read its structured data.

How it checks

Five checks, every one explained.

The page is read as a crawler reads it: the HTML your server sends, no scripts run.

Find the blocks

Every JSON-LD script and microdata item on the page.

Parse them

One syntax error hides a whole block from every reader.

Required properties

Each common type checked against its required and recommended fields.

Who you are

Organization, WebSite and sameAs links, then JSON-LD to add.

FAQ

Questions, answered.

What does the schema markup validator check?

It reads the JSON-LD and microdata in the page's HTML, checks that each block parses, lists the types found, flags missing required and recommended properties for common types (Organization, LocalBusiness, Product, Article, FAQPage, BreadcrumbList and more), and checks your brand identity data.

Is this the same as Google's Rich Results Test?

No. Google's test tells you which rich results a page can get. This validator checks the structured data itself, including the parts AI engines use to connect your brand, site and profiles, and it gives you JSON-LD to paste.

Why does structured data matter for AI search?

Organization, WebSite and sameAs data tell engines who you are and which profiles are yours. That helps them name the right brand and link your site when they cite you.

Does it run JavaScript?

No. It reads the HTML your server sends, as most AI crawlers do. Structured data added only by JavaScript may be missed by those crawlers too.

Is it free?

Yes, with no sign-up. Results are kept for 7 days; use “Check again” after you change the page.

What is the JSON-LD snippet?

When Organization or WebSite data is missing, the tool drafts it from your page's own title, description, image and profile links. Check it, then add it to your page's head.