JSON to Language Struct / Class Generator
About JSON → Go Struct
The JSON to Go Struct Converter transforms JSON payloads and API responses into idiomatic Golang structs with struct field tags (`json:"..."`, `yaml:"..."`, `xml:"..."`, `db:"..."`), nested struct generation, and pointer types for nullable values.
How to Use JSON → Go Struct
Step 1
Paste your JSON payload into the input editor.
Step 2
Configure struct tags (JSON, YAML, BSON) and struct inlining style.
Step 3
Enter root struct name (e.g. `UserPayload`).
Step 4
Click "Copy Go Struct".
Practical Use Cases for JSON → Go Struct
Golang REST API & Microservice DTO Generation
Convert JSON request bodies and third-party API payloads into typed Go structs for Gin, Echo, Fiber, and standard `net/http` handlers.
Parsing Deeply Nested JSON in Go
Generate nested struct definitions with automatic type mapping for `encoding/json` `json.Unmarshal()`.
Input & Output Examples
Converting JSON to Go Struct
`{ "user_id": 42, "user_name": "Alice", "is_admin": false }``type User struct {\n UserID int64 `json:"user_id"`\n UserName string `json:"user_name"`\n IsAdmin bool `json:"is_admin"`\n}`Key Features & Performance
- ✓Generates idiomatic Go PascalCase field names with standard struct tags (`json:"..."`, `bson:"..."`, `yaml:"..."`).
- ✓Handles nested objects with separate named structs or inline anonymous structs.
- ✓Auto-detects integer (`int64`), float (`float64`), boolean (`bool`), string, and pointer types (`*string`) for nullables.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy Go code.
Key Terminology & Definitions
Go Struct Tag
A string literal attached to a field in a Go struct definition providing metadata accessed via reflection by libraries like `encoding/json`.
`json:",omitempty"` Tag
A Go struct tag directive instructing `json.Marshal()` to omit the field if it has an empty or zero value.