Why structured data matters for SEO
Search engines read your page text, but they understand it far better when you label it explicitly. JSON-LD is the format Google recommends for that labeling: a small block of structured data, written in the schema.org vocabulary, that tells search engines this page is a recipe, that number is a rating, this text is an FAQ answer.
Pages with correct structured data become eligible for rich results — star ratings, FAQ dropdowns, product prices, and breadcrumb trails right in the search listing. These do not guarantee a ranking boost, but they dramatically increase how much space and attention your listing gets, which lifts click-through rate.
This builder produces valid JSON-LD for the common schema types so you can paste it into your page head without hand-writing nested braces.
Common schema types and their rich results
Each schema type unlocks a different search feature:
| Schema type | Rich result it enables |
| --- | --- |
| Article | Headline, date, and image in Top Stories |
| Product | Price, availability, and rating stars |
| FAQPage | Expandable question-and-answer dropdowns |
| BreadcrumbList | A navigation trail instead of a raw URL |
| LocalBusiness | Hours, address, and map in local results |
Only mark up content that is actually visible on the page. Google treats structured data that describes hidden or absent content as a violation, which can suppress all rich results for the site.
How to build your JSON-LD
Choose the schema type that matches your page (Article, Product, FAQPage, and so on).
Fill in the fields the type requires — a headline and author for an article, a name and price for a product.
The tool assembles a valid JSON-LD script block as you type.
Copy the block and paste it into the head section of your page.
Testing before you publish
Never trust structured data by eye. Paste the generated block into Google's Rich Results Test, which reports whether the type is eligible for a rich result and lists any missing recommended fields. Fix the errors it flags before publishing, then request indexing so Google re-crawls the page.
After the page is live for a week or two, check the Enhancements section of Search Console — it reports valid items, warnings, and errors detected on real crawls, which is the ground truth for whether your markup is working.
Common mistakes
Marking up content that is not visible on the page, which Google penalizes.
Leaving out required fields — a Product without a name or offers is ignored.
Putting the block in the body instead of the head; it works in either, but the head is the convention.
Describing the wrong type, such as labeling a category listing as a single Product.
Where JSON-LD earns its keep
Blog and news articles that want a headline and image in search.
E-commerce product pages seeking price and rating stars.
Help and support pages using FAQPage markup for expandable answers.
Local business sites that want hours and a map pin in local results.
Frequently asked questions
Q: Does structured data improve my ranking?
A: Not directly. It makes a page eligible for rich results that raise click-through rate, which can indirectly help, but it is not a ranking factor on its own.
Q: Where do I put the JSON-LD block?
A: In the head of the page is conventional, though Google reads it in the body too.
Q: Can I mark up content that is not on the page?
A: No. Structured data must describe visible page content, or Google may suppress rich results for the site.
Q: Is my data sent anywhere?
A: No. The JSON-LD is generated locally in your browser.
Build your JSON-LD now
Open the JSON-LD Builder. For related site files, generate a README, a .gitignore, or preview docs with the Markdown Preview.
