Which languages are supported?

TypeScript, Swift, Kotlin, Dart, C#, Java, Go, and Rust. Types are inferred from your sample JSON.

Are nullable and mixed types perfect?

Generation is best-effort from one sample. Mixed arrays and missing fields may need manual review.

New

Generate TypeScript, Swift, Kotlin, Dart, C#, Java, Go, or Rust models from sample JSON. Nested objects and arrays included.

Best-effort from sample JSON

Root type name

JSON

TypeScript model

{"id":1,"owner":{"email":"a@b.com"}}

interface Root { id: number; owner: Owner; }

Beautify and minify JSON instantly

Validate JSON syntax with detailed errors

Convert between JSON and YAML

Convert between JSON and XML