When you are wiring up an iOS app to an API, hand-writing Codable models from raw JSON is slow and easy to get wrong. Starting from a representative payload helps you scaffold Swift structs quickly and focus on app logic instead of repetitive type definitions.
What Is the JSON to Swift?
JSON to Swift is one of the tools in WebdevToolbox’s JSON Tools category. Generate Swift Codable structs from JSON data. It runs entirely in your browser — no server uploads, no accounts, no waiting.
How to Use It
- Open the tool at /tools/json-to-swift.
- Paste a sample JSON payload into the input field.
- Review the generated Swift Codable structs as they update in real time.
- Use the Copy button to copy the Swift code into Xcode.
Key Features
- 100% client-side — all processing happens in your browser. Nothing is sent to a server.
- Real-time code generation — Swift output updates immediately as you adjust the sample JSON.
- Codable-ready structs — generate Swift models designed for standard JSONEncoder and JSONDecoder workflows.
- Nested model scaffolding — complex objects and arrays become structured Swift types you can refine further.
- One-click copy — copy the generated code to your clipboard with a single button press.
When to Use the JSON to Swift
- iOS API integration — create starter Codable models for responses you need to decode in a SwiftUI or UIKit app.
- Mock data setup — turn captured JSON into Swift structs for previews, fixtures, or unit tests.
- Schema exploration — inspect a new endpoint by pasting a sample response and reviewing the generated model shape.
Try It Now
Open JSON to Swift directly from anywhere on the site using ⌘K and typing the tool name. No login required — everything runs offline-capable in your browser.
Part of the JSON Tools collection on WebdevToolbox — free, browser-based developer tools with no login required.