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JSON Toolbox- Free online JSON tools

JSON to Go

Convert JSON to Go structs online. Types are inferred for nested objects and arrays — and everything runs in your browser.

  • 100% client-side, nothing uploaded
  • Instant results
  • Works offline once loaded
Input JSON

Empty

Go output

Empty

How it works

About this tool

This free online JSON to Go generator turns a sample JSON payload into Go structs. Paste a representative response, set a root type name, and the tool infers a type for every field — including nested objects and array elements.

Structs use exported PascalCase field names with `json:"..."` struct tags that preserve the original keys. Optional fields get the ,omitempty option so they are dropped when empty during marshalling.

Ideal for scaffolding API response types in Go services when you have a live JSON sample and want correct json tags immediately.

Generation runs entirely in your browser. Your JSON is never uploaded or stored, so it is safe to use with production API responses and payloads that contain sensitive data.

JSON Toolbox processes all data locally in the browser. Nothing is uploaded to a server.

Common questions

Frequently asked questions

How do I convert JSON to Go?
Paste your JSON into the input editor and the generated Go code appears on the right. Set a root type name to control what the top-level type is called, then copy or download the result.
Does it handle nested objects and arrays?
Yes. Nested objects become their own named types, and arrays are typed by their element. When objects in an array have slightly different shapes, their fields are merged and any field missing from some items is marked optional.
What should I know about the generated Go code?
Go has no native optional types beyond pointers and omitempty — review pointer vs value fields for your null semantics. Maps with arbitrary keys may need map[string]any instead of a fixed struct.
Is my JSON uploaded anywhere?
No. The Go code is generated locally in your browser. Nothing is sent to a server, logged, or stored — even for large or sensitive payloads.

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