Free online JSON to Go struct generator. Paste JSON and generate Go struct types with json tags, omitempty support, and nested struct definitions automatically. 100% browser-based with zero uploads.
100% browser-based — your data never leaves your device
Convert JSON to Go struct types instantly. Generate Go structs with JSON tags from JSON samples for Go development.
Copy your JSON data and paste it into the input textarea above.
Toggle nullable field handling and omitempty tag preferences.
Click Generate, then copy the Go structs or download the .go file.
Drop a file here or click to browse
Ctrl+Enter to generate
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JSON to Go is a free online json tool that convert json to go struct types instantly. generate go structs with json tags from json samples for go development. It works entirely in your browser — no downloads, no installations, and no server uploads required. backend developers, frontend engineers, DevOps engineers use JSON to Go when they need a fast, privacy-respecting way to process json data without installing additional software. It supports capabilities such as struct generation, json tags, nested struct support. Additional features include type inference, local processing. Common use cases include generating go struct definitions from api response json for go microservices, creating data models from sample json for rest api client development, rapid prototyping of go type structures from configuration files and data schemas. All processing happens locally using modern browser APIs, which means your data never leaves your device. This makes JSON to Go ideal for working with sensitive data, proprietary code, or any situation where privacy matters.
JSON to Go Struct Generator is a free online json tool that helps you convert json to go struct types instantly. generate go structs with json tags from json samples for go development. Key capabilities include struct generation, json tags, nested struct support. All processing is done locally in your browser — no data is uploaded, stored, or shared with any server. There are no sign-ups, no file size limits, and no hidden charges. It is commonly used to generating go struct definitions from api response json for go microservices.
Copy your JSON data and paste it into the input textarea above.
Toggle nullable field handling and omitempty tag preferences.
Click Generate, then copy the Go structs or download the .go file.
| Category | Details |
|---|---|
| Input Limits | Maximum file size: Browser memory bound (~2 GB) |
| Nesting depth: Unlimited (browser stack limit) | |
| Supported Formats | JSON, JSONC (with comments), JSON5 (extended syntax) |
| Browser Engine |
|
All operations run entirely in your browser using built-in JSON APIs. No server uploads, no data storage, and no third-party requests.
JSON to Go is ideal when you need to generating go struct definitions from api response json for go microservices without installing software or uploading data to a server. Since everything runs in your browser, there is no setup time and no risk of your data being stored on external servers. For for persistent editing environments with linting, consider using VS Code with JSON extension. For for server-side JSON processing in scripts, jq (command-line) may be a better fit. JSON to Go fills the gap between heavyweight desktop tools and insecure online services that require uploading your data.
Go unmarshals JSON numbers as float64 by default. For integer handling, use json.Number or custom unmarshalers. The generator uses float64 for all numbers.
omitempty omits the field from JSON serialization when its value is the zero value (empty string, 0, false, nil). Enable it for optional fields to produce cleaner JSON output.
No. All conversion happens locally in your browser.
Creates Go struct types with properly typed fields and json struct tags.
Generates `json:"field_name"` tags with optional omitempty for nullable fields.
Creates separate type definitions for nested objects with proper Go naming conventions.
Maps JSON types to Go types: string, float64, bool, []interface{}, map[string]interface{}, and nested structs.
All conversion happens locally — your data never leaves your browser.
JSON to Go Struct Generator is useful in a variety of scenarios across different workflows:
Generating Go struct definitions from API response JSON for Go microservices
Creating data models from sample JSON for REST API client development
Rapid prototyping of Go type structures from configuration files and data schemas
Enable omitempty on fields that may not always be present. This produces cleaner JSON output and avoids sending zero values unnecessarily.
Go uses float64 for all JSON numbers by default. If you need int or int64, adjust the types manually after generation.
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