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JSON to everything,
instantly

TypeScript, Zod, Pydantic, Go, and 28 more formats.Paste JSON, get code. Everything stays in your browser.

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JSON → TypeScript
Input
{
  "name": "Ada",
  "email": "ada@dev.io",
  "age": 30,
  "active": true
}
Output
interface User {
  name: string;
  email: string;
  age: number;
  active: boolean;
}
No data leaves your browserReal-time conversionFree forever32 tools

32 tools, one workspace

Code generators, format converters, and utilities - everything you need for JSON.

Code Generators

TS
TypeScriptPopular

Convert JSON to TypeScript interfaces instantly

Z
ZodPopular

Generate Zod validation schemas from JSON data

Py
PydanticPopular

Generate Python Pydantic v2 models from JSON

Go
Go Struct

Convert JSON to Go structs with json tags

C#
C#

Convert JSON to C# classes with properties and JsonPropertyName attributes

Kt
Kotlin

Convert JSON to Kotlin data classes with serialization annotations

Ja
Java

Convert JSON to Java classes with Jackson annotations

Da
Dart

Convert JSON to Dart classes with fromJson/toJson methods

Ru
Rust

Convert JSON to Rust structs with serde derive macros

Sw
Swift

Convert JSON to Swift Codable structs

PH
PHP

Convert JSON to PHP classes with typed properties, constructors, and fromJson factory methods

JS
JSON Schema

Generate JSON Schema from sample JSON data

Utilities

{ }
FormatterPopular

Format and beautify JSON with customizable indentation

-
Minifier

Minify JSON by removing all whitespace

◉
Viewer

Explore JSON with an interactive tree view

±
DiffPopular

Compare two JSON objects and find differences

\e
Escape / Unescape

Escape JSON to an embeddable string or unescape a stringified JSON back to readable format

JWT
JWT Decoder

Decode JWT tokens to inspect header, payload, and signature

$.
JSONPath

Query JSON data using JSONPath expressions

✓
Validator

Validate JSON syntax instantly

✦
Beautifier

Beautify messy JSON with proper indentation and formatting

"s"
Stringify

Convert JSON to an escaped string representation

Converters

YML
YAMLPopular

Convert JSON to clean, readable YAML

CSV
CSV

Convert JSON arrays and objects to CSV format

XML
XML

Convert JSON to well-formed XML

→J
YAML → JSON

Convert YAML to JSON format

→J
XML → JSON

Convert XML documents to JSON format

→J
CSV → JSON

Convert CSV data to JSON arrays

B64
Base64

Encode JSON to Base64 and decode Base64 to JSON

SQ
SQL

Convert JSON to SQL CREATE TABLE and INSERT statements

Ma
Markdown

Convert JSON to Markdown tables

HT
HTML Table

Convert JSON to HTML tables with proper styling

Built for developers

No bloat, no accounts, no server calls. Just fast, reliable JSON tools.

Real-time conversion

Output updates as you type. No convert button, no spinners, no waiting.

100% private

Your data never leaves your browser. No servers, no tracking, no ads, no cookies.

Auto-repair & detection

Automatically fixes trailing commas, missing quotes, and common JSON issues.

Shareable links

Share conversions via URL. Data is compressed in the hash - no server needed.

Three steps. Zero friction.

01

Paste your JSON

Drop in any JSON - we auto-detect and fix common issues.

02

Pick your output

Choose from 32 formats. Switch between them instantly.

03

Copy and use

Copy the result, download the file, or share a link.

FAQ

Is my data safe?

Yes. All conversions happen entirely in your browser. Your JSON data is never sent to any server, ever. We have no backend, no database, no way to see your data.

Is JSONConvert free?

Yes, completely free. No signup, no subscription, no limits. Use it as much as you want.

What languages are supported?

TypeScript, Zod schemas, Python Pydantic, Go structs, C# classes, Kotlin data classes, Dart classes, JSON Schema, plus converters for YAML, CSV, XML, and more.

Can I share my conversions?

Yes! Click the Share button to generate a URL. Your JSON data is compressed and encoded in the URL hash - it never touches a server.

Does it work offline?

Once the page is loaded, all conversions work without an internet connection. Everything runs in your browser.

From the blog

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JSON to Kotlin Data Classes

Generate Kotlin data classes from JSON instantly. Learn type mapping, kotlinx.serialization, nullable fields, and nested object handling.

JSON to C# Classes: Generate .NET Types Fast

Generate C# classes from JSON instantly. Learn type mapping, nullable fields, nested objects, and System.Text.Json vs Newtonsoft attributes.

JSON to Mongoose Schema

Generate Mongoose schemas from JSON responses. Learn SchemaTypes, nested objects, required fields, and indexes with real examples.

Ready to convert?

Pick a tool and start. No signup, no limits.

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