JSON to Go Struct Converter

Instantly convert JSON API responses into structurally perfect Golang Structs.

Invalid JSON
Input JSON

Why Use This Golang Generator?

Automatic Field Exporting

Go's `encoding/json` package ignores lowercase fields. Our engine automatically transforms incoming JSON keys into strict `PascalCase` properties, ensuring your data unmarshals perfectly every time.

Precise Struct Tags

We do the heavy lifting for you. Every exported field is automatically decorated with precise `json:"original_name"` struct tags, maintaining the exact mapping to your third-party API payloads.

int64 Overflow Protection

Standard parsers break on massive integers. Our engine intelligently detects when a number exceeds the 32-bit limit (like Twitter or Stripe IDs) and safely casts it to an `int64` to prevent panic errors.

Deep Recursive Parsing

Dealing with complex data? Paste any deeply nested JSON payload, and we will recursively extract, name, and generate every required Sub-Struct, properly formatting multi-dimensional arrays.

Smart interface{} Fallbacks

If an API returns a highly unpredictable array containing mixed strings, numbers, and booleans, our engine catches the heterogeneous data and safely falls back to `[]interface{}` to prevent type crashes.

100% Client-Side Privacy

Parsing proprietary enterprise data or secure internal APIs? Your JSON is strictly secure. The entire Go conversion engine runs locally in your browser, and your data is never sent to a server.