JSON to Go Struct
Generate Go struct definitions with JSON tags from a JSON sample, including nested structs and slice types.
Local processingJSON to Go Struct
What is JSON to Go Struct?
JSON to Go Struct reads a JSON sample and generates Go struct types with json tags. It is a quick starting point for API clients and services that decode JSON payloads.
How It Works
The parser infers types from values: strings, numbers, booleans, objects, arrays and null. Field names are converted to exported Go names, and nested objects become separate struct types.
Common Use Cases
- Bootstrapping API response models
- Creating test fixtures for Go services
- Converting third-party API samples into typed code
- Documenting payload shapes
Technical Details
Type inference is heuristic: integer-looking numbers become int, decimal numbers become float64, and null-only fields become any. The output is formatted Go source.
How to Use
Enter your input above. The result updates automatically. Use the copy button to copy the result.
Privacy
All processing happens in your browser. Your data is never uploaded to any server.
FAQ
How are numbers typed?
Numbers without a decimal part become int, while numbers with a decimal point or exponent become float64. You can adjust the generated code afterwards.
Is my data uploaded to a server?
No. Everything runs locally in your browser. Your input never leaves your device.
Does JSON to Go Struct work on mobile?
Yes. The interface is responsive and works in modern mobile browsers without installing an app.