Pro features are free during beta

The most accurate JSON → Zod converter

JSON to Zod.
Done right.

Most tools dump z.string() for every field. TypeMorph detects real formats — z.email(), z.uuid(), z.iso.datetime() — extracts shared types, and explains every inference so you can keep or drop it. Deterministic, rule-based, 100% local. A schema you can trust as your starting point.

Input Schema

TypeMorph Output

Paste JSON to begin

↑ Edit the JSON above — output updates in real time, 100% in your browser

Language Outputs

Security Standard

Local-First

Inference Engine

100% Browser

New — Zod v4 released 2025

Migrating to Zod v4?

Zod v4 moves .email(), .uuid(), .datetime() and 14 more validators to new top-level syntax. TypeMorph migrates your schemas automatically.

z.string().email()z.email()

z.string().uuid()z.uuid()

z.string().datetime()z.iso.datetime()

Beyond Zod — every schema format

The same semantic intelligence that powers Zod output also compiles to 17 other targets — TypeScript, Go, Rust, Prisma, and more.

Paste Once.
Compile Everywhere.

Drop any JSON, YAML, or OpenAPI spec and TypeMorph emits typed code for every language your team uses — simultaneously, in the browser, with no server involved. The Zod output goes beyond types: field names are analysed semantically so email fields get .email(), id fields get .uuid().

18 generators from one AST — TypeScript, Go, Rust, Java, Swift, Kotlin, C#…
Semantic field inference: enums, formats, and constraints auto-detected

Zod

Rust

+ 15 more

// Zod
import { z } from 'zod'

export const userSchema
  = z.object(({
  id: z.uuid(),
  email: z.email(),
  age: z.int().min(0).max(150),
  role: z.enum([
    'admin', 'user']),
});

// Go

type User struct {
  ID     string `json:"id"`
  Email  string `json:"email"`
  Age    int    `json:"age"`
  Role   string `json:"role"`
}

// same input →
// Rust / Java / Kotlin
// Swift / C# / Python…

14 languages · 1 click

92Grade A

12 fields·camelCase·depth 2

✓ No issues found — schema looks good.

⟳ Recursive type detected

interface TreeNode {
  id: number;
  children: TreeNode[];
}

TypeScriptZodGoRustPythonJavaSwiftKotlinC#ProtoGraphQLPrisma+2

Schema Intelligence:
Quality Score & Recursive Types

Paste any JSON, OpenAPI, or JSON Schema and TypeMorph scores it instantly — any-type ratio, naming consistency, format hints, depth. Self-referential types like trees and linked lists are detected automatically and emitted as clean recursive interfaces.

100% local rule-based quality scoring (0–100 / A–F)
Auto-detects recursive types (tree, linked list, graph)

Breaking Change Detector:
Semantic Schema Diff

Paste two versions of a schema side-by-side and get a compatibility score instantly. TypeMorph detects breaking changes (type changes, optional→required, field removals), warnings (required→optional, format changes), and safe additions — across JSON, YAML, OpenAPI, and JSON Schema.

Compatibility score 0–100 with severity breakdown
Supports OpenAPI 3.x · Swagger 2.0 · JSON Schema · YAML

Breaking Change Detector

JSON · YAML · OpenAPI · JSON Schema

⇄ Compare ⌘↵

Version AJSON

{ "id": number,
  "role": "admin"? }

Version BJSON

{ "id": string,
  "role": "admin" }

62% compatible2 breaking1 warning1 info

⊗typeuser.id number → string

⊗requireduser.role optional → required

△enumuser.status "active" removed

＋addeduser.department new field

Schema Change Impact

Before / After · 100% local

9 of 15 targets affected

Before

{ "price": 10,
  "qty": 2 }

After

{ "price": "free",
  "qty": 2, "sku": "A1" }

1 changed·1 impacted·1 safe

Itemprice: number → string

Orderreferences Item

Customerunaffected

TypeScriptZodGoRustPythonJavaSwiftC#

Schema Change Impact:
Know What Breaks Before It Does.

Paste a before and after version of your JSON. TypeMorph traces the change through every class in the type graph and shows exactly which output languages need to be regenerated — all in the browser, instantly.

Visual graph: changed (red) · impacted (orange) · safe (gray)
15 language targets checked instantly — no regeneration guesswork

Privacy Manifesto

100% Privacy-First Architecture

Your code never leaves your browser. All type inference and code generation runs entirely client-side — no API calls, no upload endpoints.

1. Local-First Engine100% Private

Standard code conversions (JSON to TS/Go/Rust, etc.) are executed 100% entirely inside your browser. Your schema content is never sent to any server. The only exception: if you import from a URL blocked by CORS and explicitly click “Try via proxy,” that URL is fetched through our Cloudflare Worker on your behalf.

2. Schema IntelligenceRule-Based

TypeMorph's inference engine runs entirely in-browser — no AI calls, no API keys. Field-name heuristics auto-detect emails, UUIDs, dates, and URLs to emit precise Zod validators. Schema Quality Score grades your design from A–F using local rule analysis.

3. Zero Data RetentionUser-Controlled

All your conversion data stays exclusively in your browser's local storage — nothing is synced to a server. You can optionally sign in to manage your account and license. You can clear all local data at any moment with one click.

4. Open & Transparent100% Ethical

We will never sell or monetize your data. TypeMorph does not run third-party advertising and does not track your private structural operations. Two things can reach our servers: feedback you explicitly submit, and URLs you opt-in to fetch via the CORS proxy.

JSON to Zod.Done right.