Generate a GraphQL schema from a JSON example
Generate a GraphQL type (SDL) from a JSON example, right in your browser.
🔒 100% client-side — no data sent
Automatically generate a GraphQL type (schema) from a plain JSON example. The tool infers fields and their scalar types so you don't have to write the SDL by hand. Everything runs 100% in the browser, with no data sent anywhere.
What is it for?
- ▸ Quickly create a GraphQL type from a REST API response
- ▸ Prototype a schema without hand-writing the SDL
- ▸ Document a JSON object's structure in GraphQL language
- ▸ Align a GraphQL backend with existing JSON data
FAQ
How do I convert JSON to a GraphQL schema?
Paste a valid JSON example and the tool analyzes each key to generate a GraphQL type with matching fields. Scalar types such as String, Int, Float and Boolean are inferred automatically.
Does the tool handle nested objects and arrays?
Yes, nested objects become separate GraphQL types and arrays are represented as lists. This faithfully mirrors the structure of your original JSON.
Can I generate a GraphQL schema without installing any tool?
Yes, the generator works entirely online in your browser, with no installation or sign-up. Your JSON data stays private because nothing is sent to a server.