This structured facts testing tool by schema.org can test every type of schema markups. Only enter a URL or raw code, and the tool will extract JSON-LD, Microdata or RDFa markups. It will detect difficulties in your code and show the particular form of schema markup found on your page. https://easiestbookmarks.com/story19501022/examine-this-report-on-json-schema-not-required-fields