Start with the page itself
Structured data should describe content visitors can actually see. Identify the page type, primary entity and visible facts before choosing a schema type. Avoid claiming ratings, authors, products or prices that are not supported by the page.
Inspect the JSON-LD
Locate every application/ld+json block. Check valid JSON syntax, expected properties, consistent URLs and identifiers, and whether multiple blocks describe the same entity coherently. A syntactically valid block can still be semantically inaccurate.
Use the appropriate validators
Use Schema.org validation to examine vocabulary structure and Google Rich Results Test to check support for Google-specific rich result types. These tools answer different questions: valid Schema.org markup does not automatically qualify a page for rich results.
Resolve warnings thoughtfully
Separate errors that prevent interpretation from optional-property warnings. Confirm the schema matches the actual page and that required properties for the desired search feature are present. Do not add invented values simply to make warnings disappear.
Recheck after changes
Validate the deployed URL, not just a copied snippet. Confirm canonical URLs and rendered content match the JSON-LD. Keep a small record of the page tested, the issues found and what changed. Structured data can improve machine understanding, but it does not guarantee rich results or higher rankings.
References and further reading
Related: Explore QBMFX projects · Contact