JSON to Swift Converter

How to use

1. Paste JSON input from your API payload or sample document.
2. Select your output target and model options.
3. Generate, review, and copy the result.

Benefits

• Handles nested objects and arrays from API responses.
• Reduces manual model writing and naming inconsistencies.
• Works instantly in browser with copy-ready output.

Best use cases

• Generate Swift Codable models for iOS API clients.
• Speed up model creation from large response payloads.
• Reduce manual typing errors in nested data structures.

Type mapping notes

• JSON fields map to Swift properties with inferred scalar types.
• Nested JSON objects map to nested Codable structs.
• Arrays map to typed Swift arrays based on inferred items.

Implementation tips

• Review naming and coding key strategy for snake_case payloads.
• Use optional properties for fields that are not always returned.
• Store generated models near network layer abstractions.

Sample JSON

{
  "id": 101,
  "name": "Ada Lovelace",
  "active": true,
  "roles": ["admin", "editor"],
  "profile": {
    "email": "ada@example.com",
    "score": 9.8
  }
}

Sample output

struct UserModel: Codable {
    let id: Int
    let name: String
    let active: Bool
    let roles: [String]
}

FAQ