JSON to Go Struct
What is a JSON to Go Struct?
Convert sample JSON data payloads into strongly-typed Go (Golang) struct definitions (`type AutoGenerated struct { ... }`). Automatically infers nested objects, arrays, primitive types, and generates `json:"key_name"` struct tags.
Why Use This Tool?
- Go Microservice Backend Dev: Rapidly generate Go struct models for REST API JSON responses in Golang backends.
- JSON Unmarshaling Safety: Ensure exact struct field matching for `json.Unmarshal()`.
- Nested Struct Extraction: Automatically extract nested JSON objects into clean sub-structs.
How to Use
- Paste your sample JSON payload into the editor.
- Set Root Struct Name (default: `AutoGenerated`).
- Copy the generated Go struct code.
Real Working Example
Input:
JSON: { "user_id": 42, "user_name": "Alice", "is_active": true }
Output Result:
Go Code:
type AutoGenerated struct {
UserID int `json:"user_id"`
UserName string `json:"user_name"`
IsActive bool `json:"is_active"`
}
Important Technical Details & Specifications
- Golang Type Inference Engine: Converts JSON types to Go types (`int64`, `float64`, `string`, `bool`, `[]interface{}`).
- Idiomatic Go Naming: Converts snake_case and camelCase JSON keys into Exported CamelCase Go struct field names.
- Local Memory Execution: Zero network overhead.
Related Developer Tools
- JSON to TypeScript: Generate TypeScript interfaces from JSON.
- JSON Schema Validator: Validate JSON schemas.
- JSON Formatter: Prettify and format JSON.
Frequently Asked Questions
How does it convert JSON keys to Go struct field names?
It converts snake_case or camelCase keys to Exported PascalCase names required by Go for public struct fields.
Does it add `json:"..."` struct tags automatically?
Yes, exact JSON key tags are appended to every field for seamless json.Unmarshal parsing.
Is it free?
Yes, 100% free.
Are my JSON payload samples sent to a server?
No, struct generation happens 100% locally in your web browser.
What is the main function of JSON to Go Struct?
Convert sample JSON payloads into strongly-typed Go (Golang) struct definitions with json struct tags. This tool processes json to go struct data 100% locally inside your web browser.