Key Facts
- Category
- Developer & Web
- Input Types
- textarea, text, checkbox
- Output Type
- text
- Sample Coverage
- 4
- API Ready
- Yes
Overview
Convert raw JSON payloads into strongly-typed Go struct definitions instantly. This tool automatically infers nested types, exports fields using PascalCase, generates standard json struct tags, and supports optional omitempty tags to streamline your Go backend development.
When to Use
- •When designing Go backend APIs and needing to define Data Transfer Objects (DTOs) from JSON request or response payloads.
- •When integrating with third-party REST APIs and needing to quickly scaffold Go structs to unmarshal JSON responses.
- •When refactoring legacy configurations or mock data into native Go structures with proper struct tags.
How It Works
- •Paste your raw JSON payload into the JSON Input text area.
- •Specify a custom name for the Root Type Name and choose whether to enable the Omit Empty Fields option.
- •The tool parses the JSON, infers the data types for nested objects and arrays, and generates the corresponding Go struct code.
Use Cases
Generating Go struct models for incoming webhook payloads from services like Stripe or GitHub.
Creating configuration structs in Go from existing JSON config files.
Scaffolding API client response structures during integration testing.
Examples
1. Generating API Response Structs
Backend Developer- Background
- A developer is integrating a new weather API that returns complex nested JSON data, and needs to parse this data in a Go microservice.
- Problem
- Manually writing Go structs for a nested JSON response with dozens of fields is tedious and error-prone.
- How to Use
- Paste the weather API JSON response into the JSON Input, set the Root Type Name to 'WeatherResponse', check 'Omit Empty Fields', and copy the generated Go code.
- Example Config
-
Root Type Name: WeatherResponse, Omit Empty Fields: true - Outcome
- Instantly generated Go structs with PascalCase fields and json:"field_name,omitempty" tags, ready to be used with json.Unmarshal.
2. Creating DTOs for User Registration
API Designer- Background
- An API designer is defining the payload structure for a user registration endpoint that accepts user details and an array of roles.
- Problem
- Needs to quickly create a Go struct representing the registration payload to bind incoming JSON requests.
- How to Use
- Input the sample registration JSON, set the Root Type Name to 'RegisterInput', and disable 'Omit Empty Fields' to ensure all fields are strictly mapped.
- Example Config
-
Root Type Name: RegisterInput, Omit Empty Fields: false - Outcome
- A clean Go struct definition with non-optional json tags, ensuring strict mapping of the registration payload.
Try with Samples
jsonTerraform Plan JSON Samples
Sample Terraform plan JSON files exported from terraform show -json style payloads for dependency visualization and change review
title token json
Chat Transcript JSON Samples
JSON examples for multi-role chat transcripts
title token json
JSON Samples
JSON (JavaScript Object Notation) format examples from simple to complex structures
title token json
Rich Media JSON Samples
JSON examples for popular rich text editors (TipTap, Quill, Slate)
title token json
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FAQ
Does the tool support nested JSON objects?
Yes, nested objects are automatically extracted into separate, referenced Go structs or inline structures.
How are JSON field names converted to Go struct fields?
Field names are converted to exported PascalCase to comply with Go visibility rules, while retaining the original names in the json tags.
What does the Omit Empty Fields option do?
It appends ',omitempty' to the generated json struct tags, allowing Go's json package to skip empty or null fields during serialization.
Can I customize the name of the main struct?
Yes, you can define a custom name in the Root Type Name field, which defaults to 'Root'.
Does this tool run server-side?
No, the conversion is performed entirely in your browser, ensuring your JSON data remains private and secure.