Code Utilities utility

JSON to Go Struct

Generate a Go struct with JSON tags from an object sample.

● This tool runs entirely in your browser. Your input is never uploaded to our servers.

JSON sample

Output

Your result will appear here…

How to use JSON to Go Struct

Paste a JSON object with the fields you want to model.
Select Generate Code to create a Go struct and JSON tags.
Review numeric widths, nullability, and nested types for your application.

Example

Input:

{"id":1,"display_name":"Ada","active":true}

Output:

type Root struct {
	Id int64 `json:"id"`
	DisplayName string `json:"display_name"`
	Active bool `json:"active"`
}

Use cases

Scaffold a Go response struct.
Create tagged types for JSON decoding.
Review field names and tags from an API sample.

About this tool

Generate a Go struct with JSON tags from an object sample. Processing happens locally in your browser, so your input is not sent to a server or included in analytics.

Frequently asked questions

Are nested objects generated as nested structs?

This lightweight generator uses map[string]any for nested objects; arrays use the first sample item's type.

Are integer widths inferred exactly?

Integers are emitted as int64 and decimals as float64; choose narrower types if your domain requires them.

Is JSON transmitted?

No. Conversion is local.