How does Lemwatch validate structured data (JSON-LD)?

Lemwatch extracts every JSON-LD block, validates required fields against schema.org, and flags missing types Google needs for rich results.

Quick answer

We extract every JSON-LD block from crawled pages, validate required properties against schema.org, and flag missing recommended types (Organization, BreadcrumbList, Article, Product, FAQPage).

What we check

• JSON-LD parses without errors
• Required properties present per @type
• Nested @id references resolve
• No conflicting duplicate blocks (e.g., two FAQPage on one URL)
• Product schema has price + availability when applicable

Where to find it in Lemwatch

Site → SEO → Structured Data.

FAQ

Do you support microdata / RDFa?

We extract them but recommend migrating to JSON-LD — it's Google's preferred format.

Related

• SEO monitoring overview
• Canonical checks