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Client-side ProcessingUpdated 2026-02-11Report issue

Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.

JSON to Swift Struct

Generate Swift Codable struct from JSON data.

FreeRuns in browserjson to swiftjson swift struct
Cmd/Ctrl+Enter Primary actionCmd/Ctrl+Shift+L Load sampleCmd/Ctrl+Shift+X Clear/resetCmd/Ctrl+Shift+C Copy result

About JSON to Swift Struct

Generate Swift Codable struct from JSON data. Generate Swift Codable structs from JSON data online for free. Create type-safe Swift structs with proper data types from any JSON response. No signup required. Accurately converts complex nested data structures while preserving hierarchy, types, and special characters. Provides clear error messages for malformed input to help you troubleshoot quickly. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.

Related tools: JSON to Kotlin Data Class, JSON to TypeScript Interface, JSON to Go Struct

How to Use JSON to Swift Struct

  1. Paste your source data into the input area.
  2. Select the target format from the available options.
  3. Click Convert and copy the formatted output.

Frequently Asked Questions

What is JSON to Swift Struct?
Generate Swift Codable structs from JSON data online for free. Create type-safe Swift structs with proper data types from any JSON response. No signup required.
Are comments preserved during conversion?
Comment handling depends on the source and target formats. Formats that support comments (like YAML and TOML) will have them parsed, but since most data interchange formats like JSON do not support comments, they may be stripped during conversion.
What happens with invalid input?
The tool validates your input before conversion and displays clear error messages if the data is malformed. This helps you identify and fix syntax issues before attempting the conversion.
Can I convert between nested formats?
Yes, deeply nested and complex data structures are fully supported. The converter preserves the hierarchy, arrays, and key-value pairs from your source format and maps them accurately into the target format.
Is JSON to Swift Struct free to use?
Yes, all format conversions are free and unlimited. No account is required, and the tool works entirely in your browser.
Is my data safe when using JSON to Swift Struct?
Yes, your data stays on your device. The conversion runs entirely in your browser, and no data is uploaded to any server.

Related Tools

JSON to Kotlin Data Class
Generate Kotlin data class from JSON data.
JSON to TypeScript Interface
Generate TypeScript interfaces from JSON data.
JSON to Go Struct
Generate Go struct definitions from JSON data.