browserutils

JSON to Swift Converter

Generate Swift Codable structs from JSON

JSON to Swift Converter is a free online tool from BrowserUtils that generate swift codable structs from json. It runs entirely in your browser — your data never leaves your device. No account required.

How to use JSON to Swift Converter

  1. 1 Paste or type your input into the editor above.
  2. 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
  3. 3 Copy the result with one click or continue editing your input.

About JSON to Swift Converter

Free online JSON to Swift converter. Automatically generate Swift Codable structs from JSON data. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.

JSON to Swift Converter specs

Runtime
100% client-side (browser)
Cost
Free — no account, no rate limits, no usage caps
Browser support
Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
Part of
299 developer tools on BrowserUtils (100% client-side)

Questions

How do I generate Swift structs from JSON?
Paste your JSON into the input field and the tool will produce Swift structs conforming to the Codable protocol. Nested objects become separate named structs with let properties.
Does the converter support Swift Codable?
Yes, all generated structs automatically conform to the Codable protocol, making them ready for JSON encoding and decoding with JSONDecoder and JSONEncoder.
Is the JSON to Swift converter safe for sensitive data?
Yes, all parsing and code generation happen in your browser. No JSON data is transmitted to any server.
Can I use the generated Swift structs in a SwiftUI app?
Yes, the Codable structs work directly with SwiftUI. You can also add Identifiable or ObservableObject conformance manually after generating the base struct.
How does JSON to Swift handle optional fields?
Fields with null values in the JSON are generated as optional properties (e.g., var name: String?) so they decode correctly when the field is missing or null in the response.
Embed this tool

Copy this code to embed the tool on your website. Adjust the height to fit your layout.

<iframe src="https://www.browserutils.dev/embed/json-to-swift" width="100%" height="500" frameborder="0" title="JSON to Swift Converter"></iframe>

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