Gson JSON Converter

About This Tool

This tool generates Java POJOs from JSON or converts Java objects to JSON using Gson conventions. It maps JSON types to Java types, creates nested classes for objects, and uses List and Map for arrays and collections. When requested, it adds @SerializedName annotations to preserve original field names, aiding accurate data binding with APIs. The generator supports optional configurations such as package naming, serialVersionUID, Gson version, and pretty printing to improve readability. In to_pojo mode, you provide the root class name and, optionally, a package; the tool then outputs one or more Java class definitions that reflect the JSON structure. In to_json mode, you supply a Java object structure (or a sample POJO outline) and receive a JSON string that mirrors the object's current state. This helps ensure consistent data models across services and mobile apps, reduces boilerplate, and minimizes mapping errors during API integration. The tool is useful for API consumers, backend services, and Android developers who need rapid, reliable data binding with Gson without manually writing boilerplate classes. Core differentiators include automated nested POJO generation, optional annotations for field name preservation, and configurable Gson-specific options to align with existing project standards.

Sign in to see all your usage