Schema Markup Extractor & Structured Data API

Schema markup extractor, structured data API, JSON-LD extractor, and Schema.org API for Microdata, RDFa, rich snippets research, SEO audits, canonical tags, Open Graph, and Twitter Cards. Returns bounded point-in-time source evidence from static HTML. Extraction is not semantic validation, Google rich-result eligibility, ranking proof, ownership proof, or a guarantee that crawlers see the same markup.