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JSON to Swift Online Free

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Generate Codable Swift structs from JSON for iOS and macOS apps.

  • Processed in your browser
  • Privacy-first
  • No account required
  • Nothing uploaded by default

Examples

User model

Creates a Codable struct with CodingKeys for user_id.

{"user_id":1,"name":"Ada"}

How JSON to Swift works

Generate Codable Swift structs from JSON for iOS and macOS apps. Output is Swift-specific. Runs in your browser.

  1. 1. Paste JSON. Use a real API response so nested types come through.
  2. 2. Check the Swift output. Scan names, optionals, and nested types.
  3. 3. Copy the code. Drop it into your project and adjust if the sample was incomplete.
  • Generate Swift models from a real API JSON sample
  • Paste the output into an existing Swift project
  • User model
Are CodingKeys generated?
Yes, when JSON keys differ from camelCase Swift property names.

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