GraphQL Schema to JSON Schema
Convert GraphQL schema definitions to JSON Schema format. Bridge the gap between GraphQL and REST tooling ecosystems. Types map with validation preserved — free, local, no signup.
How to Use the GraphQL Schema to JSON Schema
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Frequently Asked Questions
Why convert GraphQL Schema to JSON Schema?
JSON Schema is used by OpenAPI, form validators, and REST API tools. Converting GraphQL schemas enables code generation, validation, and documentation in ecosystems that don't natively support GraphQL.
What GraphQL features are mapped?
Scalar types, object types, interfaces, unions, enums, input types, non-null markers, and list types are mapped to their JSON Schema equivalents with appropriate type constraints.
Does it handle nested types?
Yes. Nested object types, recursive references, and deeply nested structures are correctly converted with JSON Schema's $ref mechanism for complex types.
Can I use the output with OpenAPI?
Yes. The generated JSON Schema can be embedded in OpenAPI definitions, used with schema validators, or fed into code generators that consume JSON Schema.
Is my schema data stored?
No. All conversion happens locally in your browser. No schema data is sent to any server.
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Last updated October 2026