Baseline Labs Schema Generator vs isSemantic.net
Baseline Labs Schema Generator
markupschema.comisSemantic.net
issemantic.netSide by side
| Figure | Baseline Labs Schema Generator | isSemantic.net |
|---|---|---|
| Price from | €79/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 4 | 0 |
| Spec score · Schema Markup Tools | 9.3 (#1) | 7.3 (#15) |
| Data handling | The policy says connected Search Console and Analytics data is used to display measurements in Baseline Labs and is not sold, used for advertising, or used to train AI models. | The terms say the service accesses third-party websites only to analyze publicly available structured data and does not store or redistribute that accessed data. |
| Purpose | The generator reads a live page, identifies its type, and generates JSON-LD structured data. | isSemantic.net validates, visualizes, generates and converts structured data on websites. |
| Support | Standard and Power plans advertise email support with under-24-hour response, while Ultimate includes a direct engineering channel. | The maker provides a Contact us link and says users with queries about the terms can contact them, but the opened pages do not state a support response commitment. |
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.
isSemantic.net
isSemantic.net is a free web tool for validating, generating, visualizing and converting structured data. Its validator accepts JSON-LD, RDFa and Microdata and checks them against Schema.org, Google Search, Facebook Open Graph, Twitter Cards, Facebook App Links and HTML outline semantics. Markup using other vocabularies appears separately and is not validated. The generator creates or edits examples for Google Search, Schema.org, Open Graph and Twitter Cards, accepts imported snippets and allows added Schema.org properties. Google and Schema.org output is JSON-LD; Open Graph and Twitter Cards output is RDFa. The RDF visualizer shows a graph, triples table and hierarchy. It supports formats including JSON-LD, Microdata, N-Quads, N-Triples, N3, RDFa, RDF/XML, TriG and Turtle, with provisional RDF-star support. The converter accepts a URL or snippet, detects formats and converts serializations. Terms restrict use to private, non-commercial purposes.