Convert JSON data into Swift struct definitions with Codable conformance
Developer Tools
About This Tool
Convert JSON data into Swift struct definitions with Codable conformance. Generate clean Swift structs from your JSON data complete with CodingKeys, optional type handling, and nested struct support for iOS and macOS applications.
Key Features
- Swift struct generation with Codable conformance
- CodingKeys enum generation
- Optional type handling for nullable values
- Nested struct support
- Custom property name mapping
- Init from decoder support
Use Cases
- Generate Swift models for iOS and macOS applications
- Create Codable structs for API response parsing
- Automate Swift model creation from JSON data
- Quickly create data models for SwiftUI views
- Convert JSON configurations into type-safe Swift definitions
json
swift
struct
ios
codable
converter
Frequently Asked Questions
Does it support nested objects?
Yes. Nested JSON objects are converted into separate Swift struct definitions, each conforming to the Codable protocol. The parent struct references the nested struct by type.
How is Codable conformance implemented?
Each generated struct automatically conforms to the Codable protocol, with a CodingKeys enum for mapping JSON keys to Swift property names. When key names differ from property names, CodingKeys handles the mapping automatically.
How are Optional types handled?
JSON fields with null values are mapped to Swift Optional types (e.g., String?). This ensures that missing fields during JSON decoding don't cause crashes.
Can I customize the struct name?
Yes. You can set a custom root struct name in the options. Nested struct names are derived from JSON key names in PascalCase, and property names use camelCase.
Is my data safe when using this tool?
Absolutely. All conversion happens locally in your browser. No JSON data is uploaded to any server, ensuring your information remains completely private and secure.