JSON to Go Struct Converter - Generate Golang Structs Online

🐹 JSON to Go Struct

Automatically generate Go struct definitions from JSON sample. Save time for Go developers.

📝 Input JSON:

📤 Output Go Struct:

// Go structs will appear here...

💡 Example JSON Samples:

👤 User Object

Simple user with basic fields

🛍️ Product with Nested

Product with nested category and tags

📡 API Response

Typical API response structure

Online JSON to Go Struct Converter: Generate Idiomatic Golang Types

Accelerate your Go development with our JSON to Go Struct tool. Manually mapping JSON responses to Go structures is tedious and prone to syntax errors. Our converter allows you to paste a JSON sample and instantly receive clean, well-formatted Golang Structs with the correct JSON tags, ready to be used in your web servers, CLI tools, or microservices.

Why Use a JSON to Go Struct Generator?

In Go, interacting with APIs or configuration files requires predefined types. Typing these out by hand is a bottleneck for any developer.

Maintain Clean and Idiomatic Code

Our tool follows standard Go naming conventions (CamelCase for exported fields) and generates proper JSON tags. This ensures your code remains readable and compatible with the standard encoding/json package.

Reduce Debugging Time

Typing errors in JSON tags are a common source of bugs in Go. By automating the conversion, you ensure that the struct field and the JSON key match perfectly, preventing unmarshalling issues.

Key Features of Our Golang Struct Tool

Our converter is built with the specific needs of Go developers in mind, offering more than just basic mapping.

1. Support for Nested Objects & Arrays

If your JSON contains deeply nested objects or lists of items, the tool will automatically create sub-structs or slice types (e.g., []T). This modular approach keeps your code organized and reusable.

2. Precise Type Detection

Our engine analyzes the values in your JSON to determine the best Go primitive:

"text" → string
123 → int
12.34 → float64
true → bool
null → interface{} or pointers.

3. Automatic JSON Tag Generation

Every field comes with a corresponding json:"key" tag. This allows your Go code to follow Exported naming conventions while still mapping correctly to lowercase or snake_case keys in your JSON data.

How to Convert JSON to Go Structs

Paste your JSON: Insert your raw JSON data into the input box on the left.
Define Root Name: (Optional) Set the name for your primary struct (e.g., Response or Config).
Instant Conversion: The tool generates the Go code in real-time.
Copy to Clipboard: Click "Copy" and paste the code directly into your .go file.

Best Practices for Go Structs

Exported vs. Private Fields

By default, this tool generates Exported fields (starting with a capital letter). In Go, fields must be exported for the json.Unmarshal function to access and populate them.

Handling Optional Fields with Pointers

If you are dealing with optional JSON fields, consider adding * (pointers) or the ,omitempty tag to your structs. This helps differentiate between a "zero value" and a field that was truly missing from the JSON payload.

Frequently Asked Questions (FAQ)

Does this tool support complex JSON?

Yes. It can handle large files, mixed-type arrays, and deeply nested structures without any performance lag.

Is it compatible with the Go standard library?

Absolutely. The generated code is designed to work seamlessly with the standard encoding/json package without needing third-party dependencies.

Is my JSON data secure?

Yes. Your data never leaves your browser. All conversion logic is performed client-side using JavaScript, ensuring that your sensitive API structures remain private.