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JSON to Go Struct Converter (with JSON, YAML & GORM Tags)

Convert JSON objects into idiomatic Go (Golang) struct definitions with automatic type inference, nested struct decoupling, and customizable struct tags.

Root Struct Name:
Samples:
Source JSON Document21 lines
Generated Go Structs (Go 1.18+)
Structs Count3
Total Fields17
Lines of Code30
Go Compiler ReadyValid

100% Client-Side Privacy

Your JSON payloads and proprietary database structures are transpiled directly in your browser without transmitting any payload over the network.

Idiomatic Golang Typings

Generates Go 1.18+ any keywords, ISO 8601 time.Time fields, pointers for nullable keys, and proper acronym casing (ID, URL, API).

Multi-Tag Ecosystem

Equip fields simultaneously with json:, yaml:, and gorm: column tags, complete with omitempty flags and separate nested declarations.

Technical Reference & Architecture Guide

JSON to Go Struct Converter Developer Guide — Reference Guide

Comprehensive reference for converting arbitrary JSON structures into idiomatic Go (Golang) struct types with nested struct extraction, type inference, and customizable tags.

Key Parameters & Controls

rootTypeNamestring

Name given to the root Go struct type representing the JSON document.

separateNestedboolean

Extract nested objects into separate standalone struct declarations instead of anonymous inline structs.

tagsarray<string>

Array of struct tags to append to struct fields (e.g., json, yaml, gorm, xml).

omitemptyboolean

Automatically append the 'omitempty' flag to generated struct tags.

Pro Tips & Best Practices

Always extract nested structs into distinct types when models are reused across multiple API handlers or database operations.

Use pointer types (*string, *int64) for fields that can be explicitly null in JSON to differentiate between zero values and absent fields.

Include both `json:` and `yaml:` struct tags when creating configuration types that may be loaded from various file formats.

Common Gotchas & Troubleshooting

Go requires explicit numeric types. Double check if whole numbers in JSON might exceed 32-bit limits.

Populate sample values in your JSON input so the type engine can determine the correct underlying Go struct.

Frequently Asked Questions

Are primitive types like RFC 3339 timestamps inferred as time.Time?▼

Yes. Strings matching standard ISO 8601/RFC 3339 datetime patterns are automatically typed as time.Time.

Can I generate tags for GORM or database mappers?▼

Yes. Enable GORM tags to generate `gorm:"column:..."` annotations alongside standard json tags.

Does the generator support Go 1.18+ 'any' keyword?▼

Yes. Generic unbounded fields utilize the modern 'any' alias rather than legacy 'interface{}'.

Is my data sent to any third-party API during conversion?▼

No. The entire AST parser and Go code generator operate 100% on the client side in JavaScript.

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