Go Struct to JSON Converter
Convert your Go struct definitions into JSON examples with this free online converter, including nested structs, slices, and maps.
Go Struct to JSON Converter
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Convert your Go struct definitions into JSON examples with this free online converter, including nested structs, slices, and maps.
About the Go struct to JSON converter
Sample values, not runtime serialization
Basic scalar types are represented with empty strings, zeroes, booleans, or null-like placeholders. Named and inline nested structs are expanded, slices become one-item arrays, and maps become empty objects. The tool is a practical shape preview, not a full Go compiler or encoding/json runtime.
FAQ
Common questions and answers about this topic.
How does a Go struct relate to JSON?
A Go struct defines a typed data structure with named fields, while JSON is a text-based data format. Go's encoding/json package maps struct fields to JSON keys using field names or json struct tags. This converter generates sample JSON output that matches your struct definition.
How are struct tags handled?
The converter reads json struct tags to determine the JSON key name. For example, a field with `json:"user_name"` will appear as "user_name" in the JSON output. Fields tagged with `json:"-"` are omitted. If no json tag is present, the field name is used as-is.
Are nested structs supported?
Named nested structs, inline structs, and slices of structs are supported for shape preview. Maps are represented as empty objects because their keys are not known from the type alone. Embedded or highly dynamic Go patterns may need a manual check after conversion.
Is my data sent to any server?
No, the Go struct to JSON conversion runs entirely in your browser. Your Go struct definitions are parsed locally with JavaScript and never sent to any server.