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What is Schema Markup Generator (JSON-LD)?

A Schema Markup Generator (JSON-LD) produces a schema markup generator (json-ld) on demand, using a deterministic algorithm or a cryptographically strong random source. Output is generated entirely in your browser so nothing is sent to a server. Developers use it when debugging APIs and preparing data files.

Schema Markup Generator (JSON-LD)

Build valid JSON-LD schema markup for 12 common types. Article, Product, Organization, LocalBusiness, FAQ, HowTo, Recipe, Event, Person, BreadcrumbList, Review, Video.

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TLDR

Pick a schema type. Fill in the form. The tool builds a valid JSON-LD <script> block you can paste into your HTML. Supports 12 of the most common schema.org types Google uses for rich results: Article, Product, Organization, LocalBusiness, FAQPage, HowTo, Recipe, Event, Person, BreadcrumbList, Review, and VideoObject. The validator catches missing required fields before you ship.

Generated JSON-LD







Test in Google Rich Results











Runs entirely in your browser. No upload, no signup, no logging. Output is for personal or commercial use; we do not claim any rights to the data you enter.






How to use this tool


    

  1. Pick a schema type. Choose the type that matches your page (Article, Product, FAQPage, etc.). Each type has its own form.
    2. 

  2. Click Fill with sample. Pre-fills the form with realistic example values so you can see exactly which fields each schema expects.
    3. 

  3. Edit the fields with your real data. Replace each value with your real headline, image URL, price, ratings, and so on. Empty fields are auto-stripped from the output.
    4. 

  4. Copy the script tag. Click Copy script tag. Paste the entire <script type="application/ld+json"> block inside your page's <head>.
    5. 

  5. Validate with Google Rich Results Test. Click Open Google Rich Results Test and paste your page URL. If it parses cleanly and the right rich result type appears, you're done.
    6. 








About this tool and how it works


This utility runs 100% in your browser. No data leaves your device. The underlying logic is:


Each schema type defines a set of fields (some required, some recommended).
When you type values, the tool builds a JavaScript object matching the schema.org shape.
A deepClean step removes any field that is empty, null, or undefined - schema validators reject empty values.
The final JSON is wrapped in <script type="application/ld+json"> ready to paste into <head>.


You can verify by opening the browser developer tools and watching the Network tab; no requests fire during normal use beyond the initial page and library load.







Real-world scenarios where this tool helps




Article and blog posts
Article schema unlocks the article rich result and helps Google understand author, publish date, and image. Bloggers and news sites should ship Article on every post.


E-commerce products
Product schema with offers and aggregateRating powers the price-and-stars rich result. Critical for any product page that wants to show up in shopping results.


Local businesses
LocalBusiness schema with address, hours, and geo coords feeds the Google Business Profile equivalent for your website. Required if you want the knowledge panel.


FAQ pages and support docs
FAQPage schema makes your Q and A appear as expandable rich results. Big CTR win for support content.









What this tool does


    

  • Builds valid JSON-LD for 12 schema.org types Google uses for rich results.
    • 

  • Cleans empty fields so the output is compact and passes validators.
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  • Renders the final <script type="application/ld+json"> block ready to paste into HTML.
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  • Flags missing required fields per schema type.
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  • Links out to Google Rich Results Test for one-click validation.
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  • Provides sensible sample data for every schema type so you can see the shape immediately.
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  • Copy-to-clipboard for either the full script tag or the JSON only.
    • 



What it does NOT do


    

  • Does not validate every Google rich result requirement (some types require additional properties for specific result types).
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  • Does not auto-detect existing schema on your page. Paste it through the Meta Tag Analyzer for that.
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  • Does not handle deeply nested or non-standard schemas like Dataset, MedicalEntity, or RealEstateListing.
    • 

  • Does not fetch live data. You paste values manually.
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  • Does not auto-publish. The output is HTML you paste into your CMS or template.
    • 








Common mistakes and pitfalls


    

  • Adding multiple FAQPage schemas on the same page. Google wants ONE FAQPage block per page; consolidate your Q and A into a single schema.
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  • Using fake or out-of-date prices. Schema must match what's visibly on the page. Mismatches can trigger manual actions.
    • 

  • Missing the required image for Article and Product. No image equals no rich result.
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  • Forgetting to validate. Always run the Rich Results Test before assuming Google will pick it up.
    • 

  • Setting aggregateRating with fake reviews. Google requires the reviews to be visible on the page and genuine; otherwise the structured data violates spam policy.
    • 








Frequently asked questions


What is JSON-LD?
JSON-LD (JSON for Linked Data) is the structured-data format Google recommends. You drop a <script type="application/ld+json"> block in your <head>, and Google uses it to understand your content for rich results.


Will this make my page rank higher?
Schema is not a direct ranking signal. But it unlocks rich results (stars, FAQs, recipes, events) that visibly stand out in search and can lift CTR 20-30%. CTR is a strong indirect signal.


How do I know if my schema works?
Run it through Google's Rich Results Test (search.google.com/test/rich-results) and Schema Markup Validator (validator.schema.org). The tool's 'Test in Google Rich Results' button takes you straight there.


Can I have multiple schema types on one page?
Yes. A typical page might have BreadcrumbList plus Article plus FAQPage. Each goes in its own <script type="application/ld+json"> block.


Does Google use every property I add?
No. Required properties trigger rich results; recommended properties may help; unknown properties are ignored. Stick to schema.org-defined properties.


What's the difference between Article, NewsArticle, and BlogPosting?
Article is the parent type. NewsArticle is for news; BlogPosting is for blog posts. If unsure, use Article - Google understands all three.


Why does my Product schema fail validation?
Common reasons: missing image, missing price, price doesn't match visible price, aggregateRating without visible reviews, missing offers block.


Should I add schema to every page?
Add BreadcrumbList to every page. Add type-specific schema (Article, Product, Recipe) to pages where it applies. Skip schema on thin pages, login pages, and terms pages.


Does Microdata or RDFa still work?
Yes, but Google prefers JSON-LD now. Don't mix formats; stick with JSON-LD.


Is JSON-LD visible to users?
No. It lives in <script> tags in <head> and only search engines and parsers see it.