Google Rich Results Test vs Schema.dev

Google Rich Results Test is a free web tool for checking structured data and identifying rich result types a page may enable in Google Search. You can enter a full URL or paste code, then rerun the test. It accepts JSON-LD, RDFa, and Microdata, and can render JavaScript. Testing uses either a smartphone or desktop user agent, with smartphone selected by default. Results report structured-data errors and suggestions, identify detected result types, and show relevant rendered source code in an explorer. Some types receive previews for possible Search or Google Assistant appearances, including desktop and mobile layouts where available. Results can be shared through browser links without permissions; test state and code are saved, while shared links and bookmarked history remain available for approximately 90 days. Anonymous testing needs no Search Console permission, but pages and resources must be reachable publicly. A tunnel can expose local or firewalled pages. Preview output is not guaranteed to match the eventual Search result.

Schema.dev provides tools to build and test structured data for webpages, and describes a deployment tool as coming soon. Its guided point-and-click builder generates formatted JSON-LD, advertises more than 40 schema types, and lets users transform text or enter custom field content. The output can be copied into pages or used with the Schema deployer. A separate tester validates structured data supported by Schema.org through a user interface or optional API endpoint. The tester is described as supporting tests at scale in both pre-production and production environments; API checks can report errors, warnings, and recommended elements. The Schema Builder is also offered as a Chrome extension. Schema.dev lists free plans for the tester UI and builder extension, with an optional API for larger-scale testing. Deployment is described as using an existing tag manager or DNS, but the deployer is labeled coming soon; DNS-level integration for Cloudflare-managed DNS is also coming soon. The site links to a help center with a knowledge base and community contact option. Schema.dev is a product of seoClarity Labs. Its about page says seoClarity has been helping SEO professionals since 2008. The listed platforms are API, extension, and web.