JSON to Go Struct Generator helps you work with JSON data quickly and accurately, right in your browser. Whether you need to convert json to go struct types instantly. generate go structs with json tags from json samples for go development, this tool eliminatessyntax errors, malformed data, and inconsistent formatting by giving you instant, reliable results. Every operation runs locally on your device — nothing is uploaded to any server, so your data stays completely private.
How to Use JSON to Go
Paste your JSON
Copy your JSON data and paste it into the input textarea above.
Configure options
Toggle nullable field handling and omitempty tag preferences.
Copy the Go code
Click Generate, then copy the Go structs or download the .go file.
Key Features
Struct Generation
Creates Go struct types with properly typed fields and json struct tags.
JSON Tags
Generates `json:"field_name"` tags with optional omitempty for nullable fields.
Nested Struct Support
Creates separate type definitions for nested objects with proper Go naming conventions.
Type Inference
Maps JSON types to Go types: string, float64, bool, []interface{}, map[string]interface{}, and nested structs.
Local Processing
All conversion happens locally — your data never leaves your browser.
Common Use Cases
- 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
JSON to Go Struct Generator
Convert JSON to Go struct types instantly. Generate Go structs with JSON tags from JSON samples for Go development.
How to Use
Paste your JSON
Copy your JSON data and paste it into the input textarea above.
Configure options
Toggle nullable field handling and omitempty tag preferences.
Copy the Go code
Click Generate, then copy the Go structs or download the .go file.
Drop a file here or click to browse
Ctrl+Enter to generate
Frequently Asked Questions
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What is JSON to Go Struct Generator?
JSON to Go Struct Generator is a free online tool that convert json to go struct types instantly. generate go structs with json tags from json samples for go development. Whether you are debugging an API response, transforming configuration files, or preparing data for frontend state management, this tool handles JSON data efficiently — all within your browser. Key capabilities include Struct Generation, JSON Tags, Nested Struct Support. Every operation is local, meaning your data never touches a server.
Unlike JSON utilities that require uploading your data to remote servers, JSON to Go processes everything on your device. This approach gives you instant feedback, unlimited file sizes, and complete data privacy. It is particularly valuable when working with sensitive API payloads, proprietary configuration files, or large datasets you do not want to expose over the network.
Frequently Asked Questions
How does Go handle JSON numbers?
Go unmarshals JSON numbers as float64 by default. For integer handling, use json.Number or custom unmarshalers. The generator uses float64 for all numbers.
What is omitempty?
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.
Is my data sent to a server?
No. All conversion happens locally in your browser.
How does the Struct Generation feature work?
The Struct Generation feature creates go struct types with properly typed fields and json struct tags. It is designed to be intuitive and responsive, giving you immediate feedback as you interact with the tool. All processing happens locally in your browser.
What is the benefit of json tags?
JSON Tags generates `json:"field_name"` tags with optional omitempty for nullable fields. This capability sets JSON to Go apart from basic alternatives by providing more comprehensive functionality while maintaining the privacy and speed of local processing.
Is JSON to Go really free to use?
Yes, JSON to Go is completely free with no hidden charges, no sign-up requirements, and no usage limits. You can use it as often as you need, for any purpose — personal projects, commercial work, or educational use. There are no premium tiers or paid features.
Does JSON to Go work on mobile devices?
Yes, it works on any device with a modern web browser — desktop, tablet, or phone. The interface is responsive and adapts to your screen size. Since all processing is done locally, you get the same performance regardless of your device.
What happens to my data when I use JSON to Go?
Your data never leaves your device. Every operation is performed locally in your browser using JavaScript. No information is uploaded, stored, logged, or shared with any server. This privacy-first approach means you can work with sensitive data — passwords, API keys, personal information — without any risk of exposure.
Key Features
Struct Generation
Creates Go struct types with properly typed fields and json struct tags.
JSON Tags
Generates `json:"field_name"` tags with optional omitempty for nullable fields.
Nested Struct Support
Creates separate type definitions for nested objects with proper Go naming conventions.
Type Inference
Maps JSON types to Go types: string, float64, bool, []interface{}, map[string]interface{}, and nested structs.
Local Processing
All conversion happens locally — your data never leaves your browser.
Common Use Cases
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
Tips & Best Practices
Use omitempty for optional fields
Enable omitempty on fields that may not always be present. This produces cleaner JSON output and avoids sending zero values unnecessarily.
Check number types manually
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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Learn how to fix common errors related to JSON to Go:
JSON Unexpected Token
Learn what causes the 'JSON Parse error: Unexpected token' error and how to fix it in JavaScript, Python, and other languages.
JSON Circular Reference Error
Fix 'Converting circular structure to JSON' error when using JSON.stringify with objects that reference themselves.
TypeScript Type Not Assignable Error
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