Data

JSON to Go, TypeScript, Java & Python Types

Generate Go structs, TypeScript interfaces, Java records, or Python dataclasses from sample JSON entirely in your browser.

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Generated typesReady

Sample data and generated code stay in this tab. Remove sensitive production values before using any development tool.

About this tool

What JSON to Code does

Representative JSON can provide a useful first draft for typed API models. The generator infers nested objects, arrays, primitives, and nullability, then creates idiomatic field names and serialization tags for the selected language.

Common uses

  • Create a Go struct from an API response
  • Draft TypeScript interfaces for frontend code
  • Bootstrap Java or Python data models

Privacy and limitations

Sample data and generated code stay in this tab. Remove sensitive production values before using any development tool.

Validate important output in the actual language, database, or target platform.

Frequently asked questions

Is the generated model production-ready?

It is a starting point. Review optional fields, numeric ranges, dates, unions, validation, and domain-specific names.

How are arrays inferred?

The generator merges the visible element shapes and falls back to a general type when elements disagree.

Does it preserve JSON field names?

Serialization annotations preserve original keys while generated field names follow the selected language's conventions.