Web Tools
JSON to Go Struct
Convert JSON data to Go struct definitions with json tags. Infer nested structs, arrays, field types, and omitempty tags. Runs entirely in your browser — your data never leaves your machine.
json go golang converter struct code-generator
Published May 29, 2026
All interactive tools run entirely in your browser. Your data never leaves your device.
How It Works
Paste any JSON data and instantly get Go struct definitions with json struct tags. The tool infers types from values, handles nested objects, arrays, null, and mixed types. Configure the root struct name, toggle exported fields and omitempty tags.
Features
- Nested struct inference: objects within objects generate separate named structs
- Accurate type mapping: string, int, float64, bool, interface
- Array handling: homogeneous arrays get typed elements, mixed arrays use interface
- json struct tags: original key names preserved in json tags
- omitempty toggle: add omitempty to all json tags
- Exported/unexported fields: toggle PascalCase vs camelCase field names
- snake_case/kebab-case conversion: keys automatically become Go-idiomatic PascalCase
- 5 example payloads: simple, nested, array, API response, config file
- Private: runs entirely in the browser — no data transmitted
Use Cases
- Quickly generating Go structs for API response data
- Bootstrapping Go types from JSON fixtures or API documentation
- Converting JSON config files to typed Go configurations
- Learning how JSON structures map to Go types