JSON to GraphQL Schema Generator
Processed in your browser
Infer GraphQL types, fields, and queries from JSON sample data in your browser.
Generated GraphQL SDL Schema
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Direct In-Browser Handoff
Structured Data Transformation Pipeline
Chain this tool with complementary private browser utilities for a complete zero-server workflow:
Helpful Examples
Article Schema
Convert article JSON to GraphQL
{"title": "Post", "views": 100}How to Use the JSON to GraphQL Schema Generator
Quickly prototype GraphQL APIs by converting JSON sample responses into formal GraphQL SDL (Schema Definition Language) types, scalars (Int, Float, String, Boolean), and query signatures.
Privacy & Data Processing Notice
No user data leaves your browser. Computation is executed entirely on your device. We do not store, view, or transmit your inputs over our network. Your computation remains on your personal machine.
Frequently Asked Questions
How are numbers mapped to GraphQL scalars?
Integers are mapped to `Int`, while floating-point decimal numbers are mapped to `Float`.
Can I use this for NestJS or Apollo Server schemas?
Yes. The output uses standard GraphQL SDL compatible with Apollo, GraphQL Yoga, and NestJS.
Related Utilities
Frequently paired browser tools in Structured Data Tools