CleanUtils

JSON Schema to TypeScript Generator

Convert JSON Schema objects into TypeScript types with required fields, arrays, enums, and nested objects.

Also useful for: json schema to typescript json schema typescript generator schema to ts json schema type generator JSON Schema to TypeScript Generator

JSON Schema to TypeScript Generator

Runs in your browser. Inputs are not uploaded.
Input
Results 
Summary: TypeScript interface Product generated from JSON Schema.

Stats
- Properties: 3

Issues
- No issues found.

Output
export interface Product {
  "id": string;
  "price": number;
  "tags"?: string[];
}

JSON Schema to TypeScript Generator Example Run

Convert a product schema into a TypeScript type.

Sample inputs
{"title":"Product","type":"object","required":["id","price"],"properties":{"id":{"type":"string"},"price":{"type":"number"},"tags":{"type":"array","items":{"type":"string"}}}}

Generated result
Summary: TypeScript interface Product generated from JSON Schema.

Stats
- Properties: 3

Issues
- No issues found.

Output
export interface Product {
  "id": string;
  "price": number;
  "tags"?: string[];
}

What the JSON Schema to TypeScript Generator Checks

  • JSON parse and root schema

    The input must parse before TypeScript generation starts.

  • Required fields

    Required properties are emitted without optional markers; other properties become optional.

  • Primitive and array types

    String, number, integer, boolean, array, enum, and object fields are mapped to TypeScript.

  • Nested object support

    Nested properties are emitted inline so small schemas stay readable.

  • Generator limits

    Advanced JSON Schema keywords are simplified rather than fully represented in TypeScript.

JSON Schema to TypeScript Generator Questions

  • Q: Does the JSON Schema to TypeScript generator upload my schema? A: No. Inputs are processed in your browser, and pasted content is not sent to analytics or a server.
  • Q: What should I paste into the JSON Schema to TypeScript generator? A: Paste a JSON Schema object, ideally with title, type, required, and properties.
  • Q: What can I copy or download? A: You can copy or download the generated TypeScript type.
  • Q: What does the JSON Schema to TypeScript generator not verify? A: It does not cover every JSON Schema draft feature, refs, conditional schemas, or runtime validation.

Related Tools

Updates

  • v1.0.0 New 2026-05-17: Initial JSON Schema parser and TypeScript type generator added.

Use JSON Schema to TypeScript Generator with an LLM

Copy the prompt or pass the llms.txt contract link to your assistant.

Prompt 
Use the CleanUtils JSON Schema to TypeScript Generator tool for this request.
Tool contract: https://cleanutils.com/developer-tools/json-schema-to-typescript-generator/llms.txt

Read the llms.txt contract, ask me for any missing required input, then follow the contract exactly. If the contract includes JavaScript, run `runCleanUtilsTool(userInput)` in a sandboxed JavaScript runtime and return the result with any warnings or errors.
llms.txt https://cleanutils.com/developer-tools/json-schema-to-typescript-generator/llms.txt