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JSON to TypeScript / Go / Rust Type Generator

Client-SideOffline ReadyDev ToolsNo login required

Generate strongly typed TypeScript interfaces, Go structs with json tags, Rust serde models, and Python Pydantic schemas from JSON.

Sample JSON Payloads:

Source JSON Payload

Valid JSON
Root Struct / Interface Name:
export interface RootAddress {
  street: string
  city: string
  state: string
  postal_code: string
  country: string
}

export interface RootMetadataPreferences {
  theme: string
  email_notifications: boolean
}

export interface RootMetadata {
  last_ip: string
  preferences: RootMetadataPreferences
}

export interface Root {
  id: string
  name: string
  email: string
  is_verified: boolean
  login_count: number
  balance: number
  address: RootAddress
  tags: string[]
  metadata: RootMetadata
}

Multi-Language Type Generator

Instantly generate strongly-typed TypeScript interfaces, Go structs with json tags, Rust serde structs, and Python Pydantic models.

Deep Nested Schema Inference

Recursively analyzes JSON object trees and arrays, extracting child interfaces and resolving nullable types cleanly.

100% Client-Side & Private

All AST generation and parsing occurs locally in your browser. API schemas and proprietary JSON data never leave your device.

Frequently Asked Questions

Which programming languages can I generate types for?
This tool converts JSON into TypeScript interfaces/types, Go structs with `json` tags, Rust structs with serde attributes, and Python Pydantic models.
How does it handle nested objects and array elements?
Nested objects are automatically broken down into clean, isolated child interfaces/structs with PascalCase naming, and homogeneous arrays are inferred as typed collections (e.g. `User[]` or `[]User`).
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