What schema.org structured data is
Structured data describes a page for machines: “this is an organization, here's its phone”, “this product costs $49 and is in stock”. The schema.org vocabulary is maintained by Google, Microsoft, Yahoo and Yandex. JSON-LD puts the markup in a separate <script type="application/ld+json"> block; Google recommends it and Yandex reads it.
What structured data does for a site
Markup doesn't lift rankings. It makes a page eligible for rich results (ratings, price, opening hours) and helps AI assistants tie your name, address and profiles into one company. Rich results aren't guaranteed, and since August 2023 Google shows FAQ ones only for government and health sites.
One entity across the whole site
Don't declare the organization afresh on every page. The generator adds an @id such as https://your-site/#organization, other blocks point to it, and search engines merge the data into one company. That's how markup works on brusnica.dev.
{
"@context": "https://schema.org",
"@type": "Service",
"name": "Website development",
"provider": { "@id": "https://example.com/#organization" }
}Rules that are easy to break
Markup describes only what's visible on the page: genuine reviews and the same price. Google won't turn an organization's reviews of itself into stars. Use absolute https:// URLs and serve the markup in the server HTML: not every crawler runs JavaScript.