Schema.dev vs Schema Markup Generator
Schema.dev
schema.devSchema Markup Generator
schemamarkupgenerator.coSide by side
| Figure | Schema.dev | Schema Markup Generator |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | — |
| Plans published | 2 | 1 |
| Spec score · Schema Markup Tools | 7.7 (#9) | 7.2 (#17) |
| Maker | Schema.dev is a product of seoClarity Labs; the about page says seoClarity has been helping SEO professionals since 2008. | The homepage says the tool was built by Josh Blackburn. |
| Output | The builder generates formatted JSON-LD that users can copy into pages or use with the Schema deployer. | The generator provides JSON-LD code that users can copy into the page it describes. |
| Schema types | The builder advertises support for 40+ schema types and says its goal is to support every Schema type supported by Google. | The homepage lists 23 schema types, including Organization, Product, FAQ Page, Article, Recipe, Event, Job Posting, and Legal Service. |
Plans
In their own words
Schema.dev
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.
Schema Markup Generator
Schema Markup Generator creates JSON-LD schema markup from page or business details entered in a browser. Its homepage lists 23 schema types, including Organization, Product, FAQ Page, Article, Recipe, Event, Job Posting, and Legal Service. Graph mode can combine multiple schema types on one page and connect them through @id. The generated code can be copied into the page it describes; product guidance covers adding it to WordPress with WPCode or plugins such as Yoast and Rank Math, or pasting it into static-site HTML. The tool runs in the browser and requires no signup. Its homepage links to the Schema.org Validator for syntax checks and Google's Rich Results Test for eligibility, and validation and rich-result preview are listed features. The maker presents it for common website content and industry-specific uses such as law firms, e-commerce, hiring, restaurants, and healthcare. Josh Blackburn built the tool and advises marking up only content genuinely visible on the page and using genuine reviews for ratings. One stated constraint is that Service markup is not a standalone rich-result type. The Free plan is listed at free.