Google's own tool for checking whether your structured data qualifies your page for rich results in search, covering star ratings, FAQ accordions, review snippets and more.
The official schema.org validator that replaced Google's Structured Data Testing Tool, checking your markup against the full schema.org specification for compliance.
The Enhancements section in Google Search Console shows which schema types Google has detected on your site and highlights errors or warnings that are preventing rich results.
The industry favourite for generating clean JSON-LD across a wide range of schema types, with a tabbed interface that makes it quick to get correct markup without touching any code.
The enterprise standard for structured data management across large, complex websites, used by major publishers and e-commerce brands to deploy and maintain schema at scale.
Semrush's site audit includes a dedicated Markup report that checks the health of JSON-LD, Microdata and Open Graph tags across your entire site in one crawl.
A browser extension that adds a Validate button to your toolbar, letting you check structured data on any page you visit without leaving your browser or copying URLs into external tools.
An advanced visual schema builder that lets you construct complex nested structured data without writing JSON-LD by hand, making sophisticated schema requirements more manageable.
An AI-driven WordPress plugin that builds a Knowledge Graph from your content, automatically applying entity-based schema to help search engines understand your site's topics and relationships.
One of the most comprehensive free schema generators available, covering dozens of schema types with clean JSON-LD output and a well-organised interface.
Real-time SEO monitoring that alerts you the moment a schema tag disappears from a page, ensuring you catch structured data regressions before they affect your rich results.
Bing's built-in structured data validator checks whether your markup is correctly interpreted for Bing search, which is worth doing if Bing traffic contributes meaningfully to your site.