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

  1. Paste your sample JSON payload into the editor.
  2. Set Root Struct Name (default: `AutoGenerated`).
  3. 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

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.