This guide walks you through using JSON to Swift effectively. Convert JSON to Swift Codable structs instantly. Generate type-safe Swift structs with Codable conformance from JSON samples. All processing happens in your browser — your data never leaves your device.
Copy your JSON data and paste it into the input textarea above.
Toggle nullable detection for optional property generation.
Click Generate, then copy the Swift structs or download the .swift file.
Generating Swift model structs from API response JSON for iOS/macOS development
Creating Codable-compatible types from sample configuration files and data structures
Rapid prototyping of Swift data models from mock JSON data
Yes, JSON to Swift is completely free with no sign-up required, no usage limits, and no hidden fees.
No. All processing happens locally in your browser. Your data never leaves your computer.
JSON to Swift
Convert JSON to Swift Codable structs instantly. Generate type-safe Swift structs with Codable conformance from JSON samples.
Best Practices for JSON to Swift
Follow these best practices to get the most out of JSON to Swift. Convert JSON to Swift Codable structs instantly. Generate type-safe Swift structs with Codable conformance from JSON samples. These tips will help you work more efficiently and avoid common pitfalls.
Common Mistakes in JSON to Swift
Learn about common mistakes when using JSON to Swift and how to avoid them. Convert JSON to Swift Codable structs instantly. Generate type-safe Swift structs with Codable conformance from JSON samples. Understanding these pitfalls will help you use the tool more effectively.