JSON to Go Struct Generator

Convert JSON payloads to Go structs with json tags — handles nested types and arrays

Root class:

Input

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Output

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What is JSON to Go Struct Generator

Written by Giorgos Kostas. Last reviewed: April 18, 2026

JSON to Go Struct Generator converts JSON into idiomatic Go structs with PascalCase exported field names and matching `json:"…"` tags that preserve the original keys.

Nested objects become their own structs; arrays become slices. Perfect when scaffolding Go clients for new APIs.

Why use it

Scaffold API clients in Go quickly.
Port TypeScript or Java models to Go.
Generate test fixtures for JSON decode.
Teach struct tag conventions.
Prototype services with real types.

Features

PascalCase exported names
Accurate json tags
Slice types for arrays
Nested struct support
Local-only JSON to Go Struct Generator processing keeps data in-browser

How to use JSON to Go Struct Generator

Paste JSON. Any object or array-of-objects.
Set root struct name. Via toolbar.
Run. Copy the Go structs.

Example (before/after)

JSON

{ "code": "TKT-42", "status": "open", "labels": ["bug", "p1"] }

Go

type Ticket struct {
	Code   string   `json:"code"`
	Status string   `json:"status"`
	Labels []string `json:"labels"`
}

Common errors

json.Unmarshal failures

Mismatched tags cause silent decode errors.

Fix: The generator keeps JSON keys verbatim in tags.

Pointer vs value

Non-null fields become value types.

Fix: Switch to pointer types manually if nullability matters.

FAQ

Are json tags correct?

Yes — they preserve the original JSON keys exactly.

Are nested objects generated?

Yes — each nested object becomes its own struct.

Does it emit pointer types?

No — use pointers manually for optional fields.

Does it use `any` for unknowns?

Yes — null fields infer to `any`.

Is input uploaded?

No — Go structs are emitted locally in your browser from the pasted JSON.

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