Data & JSON tools

JSON to Go Struct converter

Infer Go types from sample JSON and generate struct definitions with json tags and omitempty support for partial samples. Handles nested objects and arrays for fast backend response modeling.

Root type name

JSON input

Notes: object fields get json tags; mixed types or arrays fall back to any; fields missing in some samples get ,omitempty automatically.

Go struct output

Usage & Instructions

1. Paste your JSON data into the "JSON Input" box (object or array). 2. Set the "Root type name" (default: AutoGenerated). 3. The tool automatically parses the JSON and generates the corresponding Go struct code. 4. The result is displayed in real-time on the right for you to copy.

Tips

**Local Processing** All parsing and code generation run in your browser. No data is uploaded, ensuring privacy.

**Tag Support** Generated structs include `json` tags by default. Fields missing in some samples automatically get the `omitempty` attribute.

**Type Handling** Mixed types or uninferable fields fallback to `any` (Go 1.18+) or `interface{}`. Nested objects generate independent struct definitions.

Go Map ↔ JSON

Convert Go map fmt output to readable JSON and back again directly in your browser so you can paste data into Go code or documentation without sending anything over the network.

TOML Convert

Convert between TOML and JSON with optional pretty JSON output, fully in-browser with no data uploads.

XML to JSON

Free online XML to JSON Converter. Smartly parses XML documents to JSON with custom indentation and attribute handling.

JSON formatter

Format or minify JSON locally with custom indentation and optional key sorting.

JSON compare

Recursively compare two JSON values and list added/removed/changed/type-changed differences.

CSV to JSON

Convert CSV to JSON locally in your browser with configurable delimiter and header handling. Ideal for API testing and data import tasks.

Excel to JSON

Parse Excel workbooks locally and export sheets as JSON with optional header row detection. No files are uploaded.

JSON to CSV

Convert JSON arrays of objects to CSV locally, flattening nested fields into columns. Perfect for spreadsheets and BI tools.

JSON to Excel

Export JSON arrays of objects to .xlsx files locally in your browser with custom sheet and file names.

$JSON \u2194 YAML converter$

JSON \u2194 YAML converter

Convert between JSON and YAML locally in your browser with configurable JSON indentation and one-click copy for config editing.

JSON to C# class

Infer C# property types from sample JSON and generate class definitions with support for List<T>/arrays, JsonPropertyName attributes and nullable reference types, all processed locally in your browser.

JSON to TypeScript

Infer TypeScript types from sample JSON and generate interface/type declarations with support for nested objects, arrays and union types, all processed locally in your browser.

JSON to Java POJO

Infer Java POJO field types from sample JSON and generate class definitions with List<T>/array support, optional @JsonProperty annotations and nested static classes, all processed locally in your browser.

JSON to Python model

Infer Python Pydantic BaseModel fields from sample JSON and generate models with Optional, List, Any and alias mapping support, all processed locally in your browser.

JSON to Kotlin data class

Infer Kotlin data class fields from sample JSON and generate type-safe models with List, nullable types and optional kotlinx.serialization annotations, all processed locally in your browser.

JSON to Rust Serde struct

Infer Rust struct types from sample JSON and generate serde-ready definitions with Option, Vec and field rename support, all processed locally in your browser.

JSON diff viewer

Visually diff two JSON values with a recursive tree, showing added, removed, changed and type-changed nodes, with hide-equal and copyable diff list, all processed locally in your browser.

JSON Schema Validator

Validate JSON data against a JSON Schema locally in your browser, with clear error paths and messages for type, required, enum, const, min/max, pattern and more. $ref is not resolved.

JSON to JSON Schema

Generate JSON Schema from sample JSON locally in your browser, including type/properties/required/items and optional additionalProperties=false for API definitions and documentation.

INI / YAML / JSON converter

Convert between INI, YAML, and JSON locally in your browser with basic validation and optional pretty-printed JSON output, ideal for config migrations and debugging.