JSON Schema to TypeScript/Zod Converter: Free Browser-Based Tool

Convert JSON Schema to TypeScript types and Zod schemas instantly — right in your browser.

Why Another Converter?

JSON Schema is everywhere in modern APIs, but turning it into usable TypeScript types or Zod validation schemas is tedious. Most online tools:

• Upload your schema to their server (privacy risk)
• Require signup or payment
• Don't handle discriminated unions properly
• Generate bloated output

This tool solves all three problems with a single-page app that runs entirely in your browser.

Key Features

Discriminated Unions — Properly converts oneOf with discriminator to TypeScript union types and Zod discriminated unions.

Pure Client-Side — No API calls. Your schema never leaves your device.

Zero Dependencies — No npm packages, no build step. Just paste, convert, copy.

Free Forever — No signup, no credit card, no trial. Just works.

Try It

https://tools.jackgreen.top/json-schema-to-typescript-zod-converter/

How It Works

1. Paste your JSON Schema (Draft 7 supported)
2. Click "Convert"
3. Copy the TypeScript or Zod output
4. Done

Handles: basic types, objects with nested properties, arrays, enums, discriminated unions, $ref references.

Built for developers who value their privacy and time.