Google Rich Results Test vs VitalSentinel Schema Validator

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.

VitalSentinel Schema Validator checks structured data on a page URL and separates missing, recommended and broken information. It examines JSON-LD blocks individually, including nested entities and entities within an @graph. For broken blocks, it identifies line and column and names common causes such as trailing commas, curly quotes and HTML entities. Its property checks distinguish Google-required from recommended fields for Article, Product, FAQPage, Recipe, Event, BreadcrumbList, LocalBusiness and Organization; other listed types are not graded. It also flags non-absolute image URLs, dates outside ISO format and prices containing a currency symbol. The free checker reads server-sent HTML, so it cannot see JSON-LD inserted by JavaScript. It reports microdata and RDFa when present but does not grade them. A valid result does not guarantee a Google rich result, and the tool recommends Google's Rich Results Test for rendered pages and eligibility checks. It is available on web and via API. The plan list includes a free plan and Starter at $39 a month.