Structured data must describe visible reality
Do not add ratings, prices, authors, dates, offers or organization facts that are not actually present and truthful on the page.
Schema validity is not rich-result eligibility
A syntactically valid JSON-LD object may still be unsupported, incomplete, ineligible, or ignored by a search engine. Validate critical pages with the destination search engine's current tools.
Keep identifiers consistent
URLs and @id values can connect entities across a site. Use stable canonical identifiers rather than creating a different identity string on every page.
Review generated JSON before publishing
The tool escapes values and builds a bounded object locally, but business/legal accuracy remains your responsibility.