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SPECIFICTION
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Schema.dev

schema.dev

Free plan WebAPIBrowser extension
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Spec score 7.7 #9 of 24 in Schema Markup Tools

What it is

Schema.dev provides tools to build and test structured data for webpages, and describes a deployment tool as coming soon. Its guided point-and-click builder generates formatted JSON-LD, advertises more than 40 schema types, and lets users transform text or enter custom field content. The output can be copied into pages or used with the Schema deployer. A separate tester validates structured data supported by Schema.org through a user interface or optional API endpoint. The tester is described as supporting tests at scale in both pre-production and production environments; API checks can report errors, warnings, and recommended elements. The Schema Builder is also offered as a Chrome extension. Schema.dev lists free plans for the tester UI and builder extension, with an optional API for larger-scale testing. Deployment is described as using an existing tag manager or DNS, but the deployer is labeled coming soon; DNS-level integration for Cloudflare-managed DNS is also coming soon. The site links to a help center with a knowledge base and community contact option. Schema.dev is a product of seoClarity Labs. Its about page says seoClarity has been helping SEO professionals since 2008. The listed platforms are API, extension, and web.

Spec sheet

Product
Schema.dev provides tools to build, test, and deploy structured data.Read 7 Oct 2026 · schema.dev
Support
The site links to a help center with a knowledge base and community contact option.Read 7 Oct 2026 · schema.dev
Headquarters
Chicago, Illinois, United StatesRead 28 Sep 2026 · schema.dev
Maker
Schema.dev is a product of seoClarity Labs; the about page says seoClarity has been helping SEO professionals since 2008.Read 7 Oct 2026 · schema.dev
Browser platform
The Schema Builder is offered as a Chrome extension.Read 7 Oct 2026 · schema.dev
Builder
The point-and-click builder uses a guided wizard to generate structured data for webpages.Read 7 Oct 2026 · schema.dev
Cloudflare integration
The deployer page says DNS-level integration for Cloudflare-managed DNS is coming soon.Read 7 Oct 2026 · schema.dev
Customization
Users can apply text transformations and enter custom text for any field in the builder.Read 7 Oct 2026 · schema.dev
Deployment status
The deployer page labels the product coming soon and describes deployment through an existing tag manager or DNS.Read 7 Oct 2026 · schema.dev
Output
The builder generates formatted JSON-LD that users can copy into pages or use with the Schema deployer.Read 7 Oct 2026 · schema.dev
Schema types
The builder advertises support for 40+ schema types and says its goal is to support every Schema type supported by Google.Read 7 Oct 2026 · schema.dev
Test environments
The tester is described as supporting structured-data tests at scale in pre-production and production environments.Read 7 Oct 2026 · schema.dev
Testing
The tester validates Schema.org-supported structured data through a UI and optionally an API endpoint.Read 7 Oct 2026 · schema.dev
Validation feedback
The homepage says its API checks implementations for errors, warnings, and recommended elements.Read 7 Oct 2026 · schema.dev

Plans and prices

Schema Builder Chrome extension Free Free Chrome extension; 40+ schema types Read 7 Oct 2026 · schema.dev
Schema Tester UI Free Free UI; optional API for larger-scale testing Read 7 Oct 2026 · schema.dev

Every Schema.dev plan and price →

Strong points and limits

Strong points

  • Builder advertises support for 40+ schema types.
  • Generates formatted JSON-LD.
  • Tester supports UI and optional API validation.
  • API checks errors, warnings, and recommended elements.
  • Free tester UI and builder extension.

Limits

  • Deployer is labeled coming soon.
  • Cloudflare DNS integration is labeled coming soon.
  • Builder extension is for Chrome.

Who it suits

Schema.dev may suit people creating or validating webpage structured data, including teams testing across pre-production and production environments. Its Chrome extension may fit users who want the builder in that browser.

Verdict

Schema.dev pairs a structured-data builder with UI and API testing, and lists free plans for the tester and extension. Deployment is not yet presented as available, so users needing that workflow should note its coming-soon status.

Where Specifiction places it

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