Free Tool
Verify structured data
before launch
Compare JSON-LD, Microdata, and RDFa schemas between pages — so rich snippets survive your next deployment.
Why Schema Markup Matters for SEO
Schema markup (structured data) is code that helps search engines understand your content. While not a direct ranking factor, schema dramatically improves visibility: rich snippets increase click-through rates by 20-40%, FAQ schema provides 3.2x better AI Overview presence, and Product schema displays prices and ratings directly in search results.
During site migrations, schema is often lost or broken. A missing Product schema means losing star ratings in search results. Broken FAQ schema eliminates your AI Overview advantage. Changed Organization schema can remove your brand logo from search results. This tool ensures all structured data survives your migration.
Common migration mistakes include switching from JSON-LD to Microdata (breaking existing implementations), removing schema entirely when migrating to new CMS platforms, or changing property values that create validation errors. Compare before and after to catch these issues before launch.
How to Use This Tool
Enter Your URL(s)
For single page validation, enter one URL. For migration comparison, enter your old URL (staging/production before rebuild) and new URL (after migration). The tool will crawl both pages and extract all structured data.
Review Detected Schema
See all schema types found on each page (JSON-LD, Microdata, RDFa). The tool displays schema in a readable format and highlights which types are present: Organization, Product, FAQPage, Article, BreadcrumbList, etc.
Compare Side-by-Side
When comparing two URLs, differences are highlighted automatically. Missing schema types are flagged in red. Changed properties (like different prices, authors, or descriptions) are shown with before/after values.
Validate & Fix Issues
Check validation status for each schema type. The tool identifies common errors: missing required properties, incorrect data types, invalid URLs, or values that don't match visible page content. Fix issues before launch to preserve rich snippets.
Frequently Asked Questions
Related Free SEO Tools
Meta Tags Comparison
Compare title tags, meta descriptions, and Open Graph tags between old and new pages.
H-Tag Comparison
Compare heading structure (H1-H6) and ensure content hierarchy is preserved during migrations.
Internal Links Analysis
Validate internal linking structure and anchor text distribution across your site.