TypeScript to GraphQL Schema Generator

Convert TypeScript interfaces and type definitions into GraphQL Schema Definition Language (SDL) types in your browser.

At a glance

TypeScript to GraphQL Generator converts TypeScript interfaces and type definitions into GraphQL SDL schemas. It translates primitives to String, Int, Float, and Boolean, handles non-null exclamation marks for required fields, maps string literal unions to GraphQL enums, and exports valid .graphql files client-side.

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Developer Suite: TS to GraphQL GraphQL to TS TS to OpenAPI TS to JSON Schema TS to Zod Zod to GraphQL

100% Client-Side In-Browser TypeScript to GraphQL Schema Generator

Compile TypeScript interfaces and type definitions into GraphQL SDL types, inputs, non-null modifiers, and enums locally in browser memory. Zero network requests or cloud uploads.

Pure In-Browser
Presets:
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GraphQL SDL Generation Options
Valid GraphQL SDL Specification
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Why Use This TypeScript to GraphQL Schema Generator?

100% Client-Side Generation: All TypeScript parsing and GraphQL SDL compilation runs directly in your browser with zero network latency.
Strict Non-Null Modifiers: Preserves TypeScript nullability semantics by attaching exclamation marks (!) to required properties and array items.
String Literal Enum Inference: Automatically extracts union types of string literals into standalone GraphQL enum definitions.
Smart ID Scalar Detection: Automatically maps primary identifier properties (id or _id) to the native GraphQL ID scalar.
Type & Input Support: Easily toggle between GraphQL object types (type User), input types (input UserInput), or generate both simultaneously.

How to Use TypeScript to GraphQL Schema Generator

1

Paste TypeScript Source Code

Enter or paste your TypeScript interfaces, types, or enums into the input editor.

2

Configure GraphQL SDL Options

Select whether to generate types or inputs, configure date scalars, and pick your number scalar preference.

3

Copy or Download Schema

Copy the generated GraphQL SDL schema directly or download it as a .graphql file ready for Apollo or GraphQL servers.

TypeScript Interface to GraphQL SDL Type

Demonstrates compiling a TypeScript interface into GraphQL SDL with non-null modifiers, ID scalar mapping, and an extracted enum.

TypeScript Interface Source 
interface UserProfile {
  id: string;
  name: string;
  email: string;
  role: "ADMIN" | "USER";
  bio?: string;
}
GraphQL SDL Output Processed 
enum UserProfileRoleEnum {
  ADMIN
  USER
}

type UserProfile {
  id: ID!
  name: String!
  email: String!
  role: UserProfileRoleEnum!
  bio: String
}

Technical Specifications & Engine Details

Technical specifications and engine details for TypeScript to GraphQL Schema Generator
Specification Details
Supported Formats TEXT → TEXT
Execution Mode 100% Client-Side In-Browser (client)
Browser Requirements Modern browser with JavaScript enabled.
Performance Constraints Zero external dependencies. Runs 100% client-side in browser memory.
Maintained by Pragyan Pahadi

100% Client-Side Privacy Guarantee

Your files and data remain strictly on your local device. Computations run locally using browser memory with zero network uploads.

Frequently Asked Questions

How does the generator handle required and optional fields?
Required fields in TypeScript map to non-null GraphQL types with an exclamation mark (e.g. name: String!), while optional fields (bio?: string) map to nullable types without the mark.
Can this tool generate GraphQL input types?
Yes. Under options you can switch declaration kind to generate input types (input UserInput) or both object types and input types simultaneously.
How are TypeScript Date properties handled?
By default, Date properties map to the widely accepted custom scalar DateTime and include a scalar DateTime declaration in the output.
Is my TypeScript code private?
Yes. 100% of the lexical parsing and GraphQL SDL generation executes inside your browser sandbox. No source code is ever uploaded to external servers.

Methodology

This tool runs entirely in your browser. The example above shows a representative input and the result it produces.

Last updated .

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