JSON to Go Struct
Generate Go structs from JSON data
JSON to Go Struct is a free online tool from BrowserUtils that generate go structs from json data. It runs entirely in your browser — your data never leaves your device. No account required.
How to use JSON to Go Struct
- 1 Paste or type your input into the editor above.
- 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
- 3 Copy the result with one click or continue editing your input.
About JSON to Go Struct
Free online JSON to Go converter. Automatically generate Go struct definitions with proper types and JSON tags from sample data. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
JSON to Go Struct specs
- Runtime
- 100% client-side (browser)
- Built on
- Native JavaScript JSON.parse / JSON.stringify (RFC 8259 compliant)
- Cost
- Free — no account, no rate limits, no usage caps
- Browser support
- Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
- Part of
- 299 developer tools on BrowserUtils (100% client-side)
Questions
How are JSON types mapped to Go types?
Strings map to string, numbers to float64 (or int if whole), booleans to bool, arrays to slices, and nested objects to nested structs with json tags for field mapping.
Does it generate proper JSON struct tags?
Yes, each struct field includes a json:"fieldName" tag matching the original JSON key name, ensuring correct serialization and deserialization.
Can I use the generated structs with encoding/json?
Yes, the generated structs are ready to use with Go standard library encoding/json package for both marshaling and unmarshaling JSON data.
How are nullable JSON fields handled in Go?
Fields that appear as null in the JSON are generated as pointer types (e.g., *string) so they can represent the absence of a value in Go.
Can I use this to generate Go structs from an API response?
Yes, paste a sample JSON response from any API and the tool will produce Go struct definitions ready to use with http client code and json.Unmarshal.
Does the JSON to Go converter handle nested arrays?
Yes, nested arrays of objects generate their own struct types, and the parent field becomes a slice of that struct type (e.g., []Address).
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