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JSON · Go

JSON → Go Struct

Generate Go structs from JSON · json tags added automatically

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Generation Options
Input JSONJSON
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Generated resultGo
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Overview: The JSON → Go Struct generator turns sample JSON into Go struct definitions and adds json tags automatically so the standard-library encoding/json package can serialise and deserialise correctly. It splits nested objects into separate structs and merges array element types, which is a handy helper for Go developers integrating with REST APIs or microservice messaging.

How to use: Step 1 — paste sample JSON on the left, or click "Sample" to load an example. Step 2 — fill in the package name (for example model) and the root struct name (default RootObject). Step 3 — tick "Add json tag" to generate json:"field_name" tags plus optional omitempty. Step 4 — the right panel shows the generated Go code in real time; copy it or download as a .go file. Nested objects are split into multiple standalone structs with sensible naming.

Typical scenarios: Go back-end developers generate request / response models from third-party API examples; microservices define message structs quickly; Kubernetes controllers turn ConfigMap or CRD JSON samples into Go types; Swagger examples are imported to auto-generate Go types; database migration tools use JSON configs together with json.Unmarshal.

Technical notes: Strings map to string, integers to int, floats to float64, booleans to bool, arrays to []T, and null or mixed types to interface{}. Struct names are PascalCased while field names keep the JSON casing. The json tag includes omitempty by default so zero values are omitted during serialisation. Field names with invalid Go identifier characters (such as hyphens or dots) are converted to underscores. Generated code contains no import statements; add them for any extra packages you use.

Privacy: Struct generation runs entirely in your browser and requires no network requests. The JSON you enter is never uploaded, so you can safely process business-sensitive API data.

Frequently Asked Questions

How do I use JSON → Go Struct?
Step 2 — fill in the package name (for example model ) and the root struct name (default RootObject ). Step 3 — tick "Add json tag" to generate json:"field_name" tags plus optional omitempty .
What can JSON → Go Struct do?
Typical scenarios: Go back-end developers generate request / response models from third-party API examples; microservices define message structs quickly; Kubernetes controllers turn ConfigMap or CRD JSON samples into Go types; Swagger…
Is my data private when I use JSON → Go Struct?
The JSON you enter is never uploaded, so you can safely process business-sensitive API data. The JSON you enter is never uploaded, so you can safely process business-sensitive API data.
What technical details should I know about JSON → Go Struct?
Struct names are PascalCased while field names keep the JSON casing. The json tag includes omitempty by default so zero values are omitted during serialisation.