JSON to Go Struct (2026) ✨
Generate Go structs from JSON online with nested fields and struct tags. Free browser-based JSON to Golang converter.
JSON to Go Struct Tool 🧰
Paste your input below and the output will update automatically.
TL;DR ⚡
Generate Go struct definitions from JSON samples so API payloads, config files, and test fixtures can be mapped into typed Golang code faster.
Example Input
{
"id": 42,
"name": "Folioify",
"active": true,
"tags": ["tools", "go"]
}Expected Output
type AutoGenerated struct {
ID int `json:"id"`
Name string `json:"name"`
Active bool `json:"active"`
Tags []string `json:"tags"`
}Core Information 📌
Pricing
Free — no registration required.
Data Handling
Client-side only — runs in your browser.
Output
Instant conversion with clean results.
Target Users
Developers, designers, and creators.
What is JSON to Go Struct? 🧭
JSON to Go Struct is an online generator that reads a JSON example and creates Go struct declarations with field names and JSON tags. It is useful for turning API responses into typed models before adding validation, methods, or custom unmarshalling logic.
What can it do? ✅
- Infer Go struct fields from JSON object keys and values.
- Generate nested structs for embedded objects and arrays.
- Add JSON tags so generated fields map back to original payload keys.
- Create copy-ready Go code without installing a local generator.
How JSON to Go Struct works (Step-by-Step) 🪄
- Step 1: Paste a representative JSON response or request body.
- Step 2: The generator infers field names, primitive types, arrays, and nested objects.
- Step 3: Review the Go struct output, rename fields if needed, and paste it into your package.
Options Explained
- Use realistic JSON with optional and repeated fields represented.
- Rename generated structs and fields to match your package conventions.
- Run gofmt after copying output into your project.
Common Errors
- A single JSON sample may miss nullable or optional fields that exist in production.
- Mixed-type arrays can generate broad or imperfect Go types.
- Numbers may need manual review when int, float64, or custom decimal types matter.
Limitations
- The generator cannot infer API semantics, validation rules, or custom unmarshalling behavior.
- Generated structs are a starting point and should be reviewed with real payload samples.
- Very large payloads can be harder to inspect manually after generation.
Free vs Paid 💸
This tool is 100% free with no usage limits or account required. You can use it for quick conversions without subscriptions or payments.
Official vs Third-Party 🧪
Folioify provides this as a third-party utility. It does not replace official tools, but offers a fast, accessible alternative for everyday workflows.
Use Cases 💡
- Create Go models from REST API response examples.
- Draft struct definitions for config files or webhook payloads.
- Generate test fixture types before writing unmarshalling code.
- Compare JSON shape changes during backend integration work.
Frequently Asked Questions ❓
Does JSON to Go generate json tags?
Yes. The output includes JSON tags so Go fields can marshal and unmarshal using the original JSON key names.
Can it handle nested JSON objects?
Yes. Nested objects and arrays are converted into nested Go struct shapes, but naming should be reviewed.
Should I use one JSON sample or multiple samples?
Use the most representative sample you have. If production payloads vary, compare multiple samples and merge optional fields manually.
Is the generated Go code production-ready?
It is a strong draft. Run gofmt, rename types, add validation, and test unmarshalling with real API payloads before shipping.
Data Sources & Disclaimer 📎
This tool is provided for educational and productivity purposes. Output accuracy depends on input quality. It uses json-to-go as a processing library.
Last updated: July 4, 2026. This page is maintained regularly so tool details, examples, and FAQs stay current for developers and AI search systems.