JSON to Swift Struct Converter: Generate Swift Models

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Convert JSON data structures to Swift structs with automatic type inference and Codable protocol support. Perfect for creating model layers in iOS and macOS applications.

✓ Codable Support✓ Type Inference✓ Optional Properties

JSON

Swift Structs

Code Generation Guide

Type Mapping

  • •

    Swift Types

    String, Int, Double, Bool, and [Type] for arrays

  • •

    Nested Structures

    Automatic struct creation for nested objects

  • •

    Optional Support

    Properties marked as optional with "?"

Code Features

  • •

    Codable Protocol

    Automatic JSON encoding and decoding

  • •

    MARK Comments

    Swift-style section markers

  • •

    Clean Code

    Swift naming conventions and formatting

Common Use Cases

API Integration

  • • Network responses
  • • Data models
  • • REST APIs
  • • GraphQL types

App Development

  • • View models
  • • Configuration
  • • Local storage
  • • State management

Data Handling

  • • File parsing
  • • Data migration
  • • Cache models
  • • Analytics events

Frequently Asked Questions

How does Codable work?

The Codable protocol in Swift provides automatic JSON encoding and decoding. When you conform to Codable, Swift automatically generates the necessary code to convert between JSON and your Swift structs.

Why use optional properties?

Optional properties (marked with ?) handle cases where JSON values might be missing or null. This follows Swift's safety-first approach and prevents runtime crashes from missing data.

How are arrays handled?

JSON arrays are converted to Swift array types with the appropriate element type. For example, an array of numbers becomes [Int] or [Double], and an array of objects becomes [CustomType].

Can I use this with SwiftUI?

Yes! The generated structs work perfectly with SwiftUI. Just add '@Published' to properties in an ObservableObject or make the struct conform to Observable for SwiftUI data binding.

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