JSON to Language Struct / Class Generator
About GraphQL → JSON Schema
The GraphQL Schema to JSON Schema Converter transforms GraphQL Schema Definition Language (SDL) types, input objects, and enums into compliant JSON Schema Draft-07/2020-12 definitions for form builders, OpenAPI, and payload validation.
How to Use GraphQL → JSON Schema
Step 1
Paste your GraphQL SDL code into the editor.
Step 2
Select JSON Schema Draft specification version.
Step 3
Inspect the converted JSON Schema tree.
Step 4
Click "Copy JSON Schema".
Practical Use Cases for GraphQL → JSON Schema
Dynamic Form Generation from GraphQL Mutation Inputs
Convert `input CreateUserInput { ... }` definitions into JSON Schema to dynamically render web forms using Formik or react-json-schema-form.
OpenAPI & REST Gateway Compatibility
Export GraphQL schema types into standard JSON Schema format for API documentation and API gateway validators.
Input & Output Examples
Converting GraphQL Input to JSON Schema
`input UserInput { name: String! age: Int }``{\n "$schema": "https://json-schema.org/draft/2020-12/schema",\n "type": "object",\n "properties": {\n "name": { "type": "string" },\n "age": { "type": "integer" }\n },\n "required": ["name"]\n}`Key Features & Performance
- ✓Compliant with JSON Schema Draft-07, 2019-09, and 2020-12 specifications.
- ✓Maps GraphQL `Int` to `"type": "integer"` and `Float` to `"type": "number"`.
- ✓Translates GraphQL non-null fields (`!`) into JSON Schema `"required"` array entries.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy JSON Schema.
Key Terminology & Definitions
Input Object Type (GraphQL)
A special GraphQL type used exclusively as arguments in queries and mutations to pass complex structured objects.
JSON Schema Validation
A standard format specifying validation constraints for JSON documents across web and mobile systems.