JSON to Go Struct Generator Online — Free Golang Type Generator
JSON to Go Struct
Convert JSON to Go structs with json tags and idiomatic naming.
Free online JSON to Go struct generator. Paste any JSON object or array and instantly get Go struct definitions with json struct tags, Go-idiomatic PascalCase field names, optional pointer types, and omitempty tags. Handles nested objects, arrays, and nullable fields. Perfect for Go developers building API clients or backend services. Runs entirely in your browser.
Keywords: json to go, json to go struct, json to golang, go struct generator, golang json, go json tags, golang struct from json, json to go converter, go type generator, golang api struct, go json marshaling, json unmarshal go struct
Tags: json, go, golang, struct, converter, generator
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How to JSON to Go Struct Online
Paste valid JSON into the input area on the left.
Set the root struct name (defaults to 'Root') using the option field.
Toggle omitempty tags and pointer types to match your Go project conventions.
Click Convert or press ⌘↵ (Mac) / Ctrl+Enter (Windows) to generate Go structs.
Copy the generated Go code or download it as a .go file.
JSON to Go Struct Features
Generates idiomatic Go structs with json struct tags from any JSON input.
Supports nested objects — creates separate named structs for each nested structure.
Optional omitempty tag on all json tags for omitting zero-value fields during marshalling.
Optional pointer types (*string, *int, etc.) for nullable fields.
Go-idiomatic field naming: camelCase JSON keys are converted to PascalCase exported fields.
Handles JSON arrays of objects by inferring the slice element type.
Works entirely in your browser — JSON never leaves your device.
Keyboard shortcut ⌘↵ for instant conversion.
Frequently Asked Questions
- What is JSON to Go struct conversion?
- JSON to Go converts a JSON sample into Go struct definitions with the correct json struct tags. This saves time when consuming REST APIs — paste the API response and get a ready-to-use Go type you can copy into your codebase.
- What does omitempty do?
- omitempty is a json tag option that instructs encoding/json to skip a field when marshalling if the field holds the zero value for its type (empty string, 0, false, nil pointer, etc.). Enable it when you want compact JSON output that omits unset fields.
- When should I use pointer types?
- Use pointer types when you need to distinguish between a field being absent/null and a field holding its zero value. For example, *bool lets you tell apart false from null, while bool cannot.
- Is my JSON data safe?
- All conversion runs in your browser using pure JavaScript. No JSON is ever sent to a server. Your data stays completely private.
- Can it handle nested JSON?
- Yes. Each nested JSON object becomes its own Go struct. The parent struct references the child struct by name, and all structs are output together.
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