JSON to C++ Converter

How to use

1. Paste a representative JSON payload that mirrors the response or file format your C++ code needs to consume.
2. Review the generated structs, STL field types, and inferred nesting for objects, vectors, and optional values.
3. Copy the output into your project and layer serializer glue, constructors, or domain adapters where your codebase needs them.

Benefits

• Produces readable typed C++ struct scaffolding without starting from a blank header.
• Keeps nested payloads in explicit model types that are easier to adapt to SDK and desktop code.
• Works well as a first pass before adding nlohmann/json glue, custom deserializers, or domain wrappers.

Best use cases

• Native SDKs and desktop applications that want fast struct scaffolding from API payload examples.
• Game tools or internal utilities that decode JSON config and want strongly typed models.
• C++ services that need transport structs before custom serialization layers are added.

C++ struct tips

• Review integer widths, floating-point precision, and `std::optional` usage against real payload samples before shipping.
• Treat the generated structs as transport models and add richer constructors or invariants separately.
• Keep serializer-specific adapters outside the generated model layer when you want the structs to stay reusable.

Sample JSON

{
  "id": 101,
  "name": "Ada Lovelace",
  "active": true,
  "roles": ["admin", "editor"],
  "profile": {
    "email": "ada@example.com",
    "score": 9.8
  }
}

Sample C++ struct output

#include <string>
#include <vector>

struct UserModel {
  int id;
  std::string name;
  bool active;
  std::vector<std::string> roles;
};

FAQ