Baseline Labs Schema Generator vs JSON-LD Generator
Baseline Labs Schema Generator
markupschema.comJSON-LD Generator
jsonld.comSide by side
| Figure | Baseline Labs Schema Generator | JSON-LD Generator |
|---|---|---|
| Price from | €79/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 4 | 1 |
| Spec score · Schema Markup Tools | 9.3 (#1) | 7.8 (#7) |
| Founded | 2025 | 2017 |
| Purpose | The generator reads a live page, identifies its type, and generates JSON-LD structured data. | The generator creates JSON-LD structured data for websites by letting users fill in fields and view the generated markup in real time. |
| Support | Standard and Power plans advertise email support with under-24-hour response, while Ultimate includes a direct engineering channel. | The contact page invites questions and says the maker will do their best to respond. |
Plans
Baseline Labs Schema Generator
- FreeFree
- Standard€79 a month
- Power€249 a month
- Ultimate€749 a month
In their own words
Baseline Labs Schema Generator
Baseline Labs Schema Generator reads a live webpage, identifies its type, and produces JSON-LD structured data. It supports more than 20 schema.org types, including Article, Product, FAQPage, HowTo, LocalBusiness, and SoftwareApplication. The generated script tag can be placed in the page head; the markup is static and needs no server changes or extra libraries. Each generation captures the page as it appears at that time. A separate Rolling Schema feature re-crawls pages and regenerates markup on a schedule, as often as every 30 minutes. The generator page currently reports that the service is temporarily offline and that submitted pages are queued. An API can generate JSON-LD for a URL; API requests use an X-API-Key header, and access is included on Power and above. Plans range from Free to Ultimate, with paid plans at 79.00 EUR, 249.00 EUR, and 749.00 EUR or more per month. The company was founded in 2025 and is based in Galway, Ireland.
JSON-LD Generator
JSON-LD Generator is a free web tool that creates structured data markup from fields users fill in, with generated JSON-LD shown in real time. It covers 17 schema types, including Article, Breadcrumb, Course, Event, FAQ, HowTo, Local Business, Organization, Product, Recipe, Review, Video, WebSite and WebPage. Product fields include offers, ratings and reviews; Local Business offers more than 100 subtypes, with examples such as Restaurant, Hotel and Dentist. The tool displays live checks for required fields and produces JSON using JSON.stringify, which the site describes as strictly valid JSON. Users can copy the generated code and open Google’s Rich Results Test, or follow a shortcut to the schema.org Validator. The form state is preserved between visits. A companion address-to-latitude-and-longitude tool is available for Local Business or Organization data. The generator runs on the web and requires JavaScript. Its creator, Patrick Coombe, says the site launched in 2017 as a reference for web developers and SEO practitioners learning about JSON-LD.