BYTETOOLS

JSON to Go Struct

Convert JSON to Go structs online with exported fields and json tags. Generates nested structs and slice types from a sample — free and 100% in-browser.

  • Exported PascalCase fields with json struct tags
  • Nested structs for nested JSON objects
  • Slice types for arrays, merged across elements
  • Infers int vs float64 for numbers
  • omitempty tags for keys that vary between objects
  • 100% private — JSON never leaves your browser

How to use the JSON to Go Struct

  1. 1

    Paste a representative JSON sample into the input box.

  2. 2

    Set the root struct name (defaults to AutoGenerated).

  3. 3

    Click Generate to produce Go structs with json tags.

  4. 4

    Copy the structs to your clipboard or download them as a .go file.

About the JSON to Go Struct

The ByteTools JSON to Go generator turns a JSON sample into idiomatic Go struct definitions. It creates exported PascalCase field names, adds json:"originalKey" tags to preserve the wire format, builds nested structs for nested objects and uses slice types for arrays.

It is designed for Go developers unmarshalling API responses, config files or database rows. Instead of hand-writing structs and tags, paste your JSON, set the root struct name and copy well-formed Go you can drop into a package straight away.

Type inference runs 100% locally in your browser with JavaScript. Your JSON is never uploaded or stored, so it stays private — safe for internal APIs, unreleased payloads and confidential data models.

Frequently asked questions

How do I convert JSON to a Go struct?

Paste your JSON, set a root struct name and click Generate. The tool infers each field's type, converts keys to exported PascalCase, adds json tags with the original key names and outputs Go you can copy into a package.

Does it add JSON struct tags?

Yes. Every field gets a json:"originalKey" tag so encoding and decoding preserve the exact key names from your sample. Fields that only appear in some objects also receive an omitempty option.

How are numbers typed in the generated Go?

Whole numbers are typed as int and numbers with a decimal point as float64. If an array mixes integers and floats, the field is widened to float64 so every value fits without loss.

What happens with nested objects and arrays?

Nested objects become their own named structs referenced from the parent, and arrays become slice types like []Item. Identical shapes are reused so you do not get duplicate structs for the same data.

Is my JSON uploaded anywhere?

No. The conversion runs entirely in your browser with JavaScript. Nothing is sent to a server or stored, so it is safe for confidential API responses and internal schemas.

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