What is schema markup?
Schema markup is structured data that describes entities on a page using the Schema.org vocabulary so machines can interpret content more clearly.
Free tools
Free Schema Markup and JSON-LD Generator
Generate standards-based JSON-LD, check required and recommended fields, build connected entity graphs, and validate markup awareness against Schema.org and Google guidance — privately in your browser.
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Structured data guide
What is JSON-LD?
JSON-LD is a JSON format for linked data. It is commonly embedded in a script tag and is Google’s preferred structured-data format for many features.
How structured data works
You describe visible entities with properties such as name, URL, offers, or author. Search systems may use that data for understanding and, when eligible, enhanced appearance.
Schema.org vs Google rich-result support
Not every Schema.org type has a dedicated Google rich result. This tool labels Google-supported, Schema.org-only, supporting, and policy-sensitive types.
How to choose a schema type
Pick the most specific type that matches the page’s primary visible entity. Use Type Finder when unsure, then add supporting entities via @graph.
How to generate schema markup
Select a type, complete required and recommended fields, review validation layers, copy JSON-LD or a script tag, and test with official validators.
Where to place JSON-LD
Add a script tag with type application/ld+json to the page HTML. Keep the tool’s own page schema separate from user-generated preview output.
How to add schema in Astro
Serialize known objects with JSON.stringify into a script tag in Astro templates. Never inject untrusted generated JSON as active site schema without review.
How to add schema in Shopify
Ensure markup matches the current product, article, or shop entity and audit theme/app JSON-LD for duplicates before publishing.
How to add schema in WordPress
Use a maintained SEO plugin or carefully reviewed custom head code, then verify the rendered page source.
How to validate schema
Use this tool’s JSON, Schema.org, Google, and policy layers, then confirm with Google Rich Results Test and the Schema.org Markup Validator.
Required vs recommended properties
Required fields are needed for a complete generator output or Google eligibility checks. Recommended fields improve completeness but may not be mandatory.
What is @id in JSON-LD?
@id identifies an entity so Organization, WebSite, WebPage, and content types can reference each other consistently.
What is @graph?
@graph groups multiple entities in one JSON-LD document, which helps connect publishers, pages, breadcrumbs, and content.
Can multiple schema types appear on one page?
Yes. Use connected entities and avoid contradictory duplicates for the same product, article, or business.
Why valid schema may not show a rich result
Eligibility, indexing, quality systems, crawlability, and current Google feature support all affect whether enhancements appear.
Common structured-data mistakes
Hidden content, fake reviews, mismatched prices, duplicate theme/app markup, wrong types, and treating every Schema.org type as a Google rich result.
Why visible content must match schema
Structured data should describe what users can see. Misleading markup violates Google’s guidelines.
How duplicate schema causes conflicts
Themes, plugins, and apps may already emit JSON-LD. Conflicting Product or Organization entities can confuse interpretation.
Schema markup and SEO
Schema supports understanding and eligibility for features. It is not a guaranteed ranking lever.
Schema markup and AI understanding
Clear entity markup can help machines interpret relationships, but outcomes vary by system and are not guaranteed.
FAQ
Schema generator FAQs
Straight answers about JSON-LD, Google support, validation, placement, and privacy.
What is a schema generator?
A schema generator helps you create Schema.org JSON-LD structured data by choosing a type, filling fields, and exporting markup you can place on a webpage.
Is this schema generator free?
Yes. The Web6 Schema Markup Generator is free and does not require an account.
Is my data stored on Web6 servers?
No. Schema data is processed in your browser. Saved templates stay in local browser storage only when you explicitly save them.
What is JSON-LD?
JSON-LD is a JSON-based format for linked data. Google recommends JSON-LD for many structured-data implementations.
Is JSON-LD recommended for structured data?
Yes. Google’s documentation commonly recommends JSON-LD for structured data on web pages.
Does schema markup improve rankings?
Schema helps search engines understand page content. It does not guarantee ranking improvements.
Does valid schema guarantee rich results?
No. Valid structured data does not guarantee rich results. Google decides eligibility based on guidelines, page content, accessibility, quality systems, and supported features.
What is the difference between Schema.org and Google-supported schema?
Schema.org is a shared vocabulary. Google supports a subset of types for rich results. This tool labels each type’s Google-support status.
Which schema type should I use?
Use the Type Finder or choose the most specific type that matches visible page content, such as Product for product pages or Article for articles.
Can I add multiple schema types to one page?
Yes. Multiple JSON-LD blocks or a single @graph are allowed. Avoid conflicting duplicate entities for the same visible item.
What is @graph?
@graph is a JSON-LD container for multiple related entities, such as Organization, WebSite, WebPage, and Article connected by @id references.
What is @id?
@id is a stable identifier for an entity in your structured-data graph so other entities can reference it without duplication.
Can I generate Product schema?
Yes. Product generation includes offer fields and Google-oriented required/recommended checks.
Can I generate LocalBusiness schema?
Yes. Use LocalBusiness only when the business has a genuine physical location or appropriate local presence.
Can I generate Article schema?
Yes. Article, BlogPosting, and NewsArticle are supported with author, publisher, dates, and image fields.
Can I generate FAQPage schema?
Yes, with a clear warning that FAQ rich-result eligibility is limited and answers must be visible on the page.
Can I generate SoftwareApplication schema?
Yes. SoftwareApplication and WebApplication are supported. Set price to 0 only when the product is genuinely free.
Can I validate existing JSON-LD?
Yes. Import or paste existing JSON-LD for JSON syntax checks, unknown-property warnings, and related notes.
Does the tool validate Google requirements?
Yes for supported types, as a field-completeness and eligibility-awareness layer. It does not replace Google’s Rich Results Test.
Can I import existing schema?
Yes. Paste JSON-LD, upload a file, or extract JSON-LD from pasted HTML script tags. Remote URLs are not fetched.
Can I download schema as JSON?
Yes. Download JSON or TXT, copy JSON-LD or a full script tag, and export saved templates.
Where should I place JSON-LD?
Place it in a script tag with type application/ld+json in the page head or body. See the installation guide for Astro, React, Shopify, and CMS notes.
Can schema be added through JavaScript?
It can, but server-rendered or static JSON-LD is generally easier for crawlers. Prefer markup present in the initial HTML when possible.
Should schema match visible content?
Yes. Structured data must accurately represent content that users can see on the page where required.
Can I use reviews that are not shown on the page?
No. Only add Review or AggregateRating when genuine reviews/ratings are visible and permitted for the entity type.
Can I add Organization and WebSite schema together?
Yes. Use the @graph builder and reference the Organization @id from WebSite.publisher.
How do I test schema with Google?
Copy your markup and open Google’s Rich Results Test. This tool does not submit your schema automatically.
What is the Schema.org validator?
The Schema.org Markup Validator checks general Schema.org markup and syntax. Use it alongside Google’s tools.
How do I avoid duplicate schema?
Audit theme, plugin, and app output, use consistent @id values, and remove conflicting markup instead of stacking contradictory entities.
Can I use this generator for Shopify?
Yes. Generate markup that matches the current product or content, then place it carefully while checking for existing theme/app JSON-LD.
Related tools and services
- JSON Formatter
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- UTM Builder
Build campaign tracking URLs.
- Shopify Theme Detector
Identify probable Shopify themes.
- SEO services
Technical SEO and growth support.
- Custom website development
Sites built with clean technical foundations.
- Shopify development
Store builds and theme engineering.
- Shopify app development
Custom apps for merchant workflows.
- Ecommerce website development
Commerce storefronts and landing systems.
- SaaS development
Product engineering for SaaS teams.
- Tools directory
More free browser tools from Web6.
- Contact Web6
Talk through SEO and implementation delivery.
Official references
- Google Rich Results Test
- Schema.org Markup Validator
- Google Search Gallery
- Schema.org full type hierarchy
This tool generates structured data based on the information you enter. You are responsible for ensuring that the markup is accurate, visible on the page where required, and compliant with current search-engine and Schema.org guidelines.
Valid structured data does not guarantee enhanced search appearance, indexing, rankings, AI citations, or rich results.