Schema markup (JSON-LD)
Structured data that states explicitly what a page is about.
SEO
Definition
Schema markup is a vocabulary from schema.org, normally embedded as JSON-LD in the document head, that describes entities and their relationships in machine-readable form.
Common types include Organization, SoftwareApplication, Article, Product and BreadcrumbList.
Why it matters
It removes interpretation risk. Retrieval systems and crawlers no longer have to infer what the page is; the page declares it.
How to apply it
- Match the schema type to the page's real purpose.
- Keep markup consistent with visible content.
- Validate every template once, then generate the rest programmatically.