Named nested types
Nested objects become their own structs (Address, Order) instead of anonymous structs.
JSON to Go Struct Converter
Paste JSON and get idiomatic Go structs with json tags for encoding/json.
Input
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Result
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Modified (right)
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About this tool
How the JSON to Go Struct works
Generate Go structs with json tags from JSON. Nested objects become named types, optional fields become pointers with omitempty, and IDs follow Go naming.
How to use the JSON to Go Struct
- Paste a JSON object or array (an API response works well).
- Set the root struct name.
- Copy the structs into your Go package.
JSON to Go Struct example
{"id":7,"user_name":"aarav","tags":["a"],"address":{"city":"Pune"}}type User struct {
ID int64 `json:"id"`
UserName string `json:"user_name"`
Tags []string `json:"tags"`
Address Address `json:"address"`
}
type Address struct {
City string `json:"city"`
}When to use it
- Typing third-party API responses in Go services.
- Writing request and response structs for handlers.
- Decoding JSON config files.
Tip: Paste several array items rather than one: optional fields can only be detected when some items lack them.
Idiomatic names
Fields are exported with Go initialisms: user_id becomes UserID, api_url becomes APIURL.
Optional fields
Fields missing from some array items, or null, become pointers with omitempty.
Smart types
int64, float64, bool, string, time.Time for RFC 3339 timestamps, and slices for arrays.
FAQ
Common questions
How are arrays of objects typed?
Items are merged into one struct named after the singular key (orders → Order); fields missing from some items become optional.
Why is a field a pointer?
It was null or missing in at least one example, so a pointer lets you tell "absent" from the zero value.
Which Go version is needed?
The output uses any for unknown values, which needs Go 1.18 or later.
Is my JSON uploaded?
No, the code is generated in your browser.
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