Free · Browser-only · 149 of 149 converters live

Convert any schema to any code.

Paste a JSON, JSON Schema, OpenAPI, GraphQL SDL, SQL DDL, Protobuf, Prisma or TypeScript sample. Get TypeScript, Zod, Pydantic, Go, Rust, Swift, Kotlin, and more — generated entirely in your browser.

Try JSON → TypeScript JSON → Zod Browse all Changelog

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Search-backed starting points

Picked from current GSC signals, public competitor positioning, and broader Google/Bing search intent.

Most searched starting point

JSON -> TypeScript

Turn API responses and fixtures into interfaces before choosing validation.

Runtime validation

Use Zod validation for API responses, forms, env vars, and tRPC inputs.

Validation workflow

A broader search intent than one converter: API responses, forms, env vars, and safeParse.

JSON -> Go struct

A direct path for the JSON to Go / JSON to Go struct search intent.

OpenAPI -> TypeScript

Extract clean types from a spec without setting up a full client generator.

Shortcuts

Validation and schema routes

Common paths people search for after landing on JSON, Zod, OpenAPI, and TypeScript converters.

JSON Schema -> Zod

For teams moving existing schemas into TypeScript runtime validation.

JSON Schema -> TypeScript

Turn a schema contract into copyable TypeScript types.

TypeScript -> Zod

Draft validation schemas from existing interfaces and type aliases.

OpenAPI -> Pydantic

Extract Python models from API specs for FastAPI-style workflows.

GraphQL -> TypeScript

Convert schema definitions into types you can use in client code.

Bridge data platform schemas into browser-friendly validation code.

All converters

10 inputs × 15 outputs

Browse by input:JSON JSON Schema OpenAPI GraphQL SQL DDL Protocol Buffers Avro TypeScript Mongoose Schema Prisma Schema

149 matches

JSON → TypeScript

JSON → Pydantic

JSON → Python dataclass

JSON → Go struct

JSON → Rust struct

JSON → Kotlin data class

JSON → Swift struct

JSON → Dart class

JSON → Java POJO

JSON → C# record

JSON → PHP class

JSON → Ruby class

JSON Schema → TypeScript

JSON Schema → Zod

JSON Schema → Yup

JSON Schema → Joi

JSON Schema → Pydantic

JSON Schema → Python dataclass

JSON Schema → Go struct

JSON Schema → Rust struct

JSON Schema → Kotlin data class

JSON Schema → Swift struct

JSON Schema → Dart class

JSON Schema → Java POJO

JSON Schema → C# record

JSON Schema → PHP class

JSON Schema → Ruby class

OpenAPI → TypeScript

OpenAPI → Zod

OpenAPI → Yup

OpenAPI → Joi

OpenAPI → Pydantic

OpenAPI → Python dataclass

OpenAPI → Go struct

OpenAPI → Rust struct

OpenAPI → Kotlin data class

OpenAPI → Swift struct

OpenAPI → Dart class

OpenAPI → Java POJO

OpenAPI → C# record

OpenAPI → PHP class

OpenAPI → Ruby class

GraphQL → TypeScript

GraphQL → Zod

GraphQL → Yup

GraphQL → Joi

GraphQL → Pydantic

GraphQL → Python dataclass

GraphQL → Go struct

GraphQL → Rust struct

GraphQL → Kotlin data class

GraphQL → Swift struct

GraphQL → Dart class

GraphQL → Java POJO

GraphQL → C# record

GraphQL → PHP class

GraphQL → Ruby class

SQL DDL → TypeScript

SQL DDL → Zod

SQL DDL → Yup

SQL DDL → Joi

SQL DDL → Pydantic

SQL DDL → Python dataclass

SQL DDL → Go struct

SQL DDL → Rust struct

SQL DDL → Kotlin data class

SQL DDL → Swift struct

SQL DDL → Dart class

SQL DDL → Java POJO

SQL DDL → C# record

SQL DDL → PHP class

SQL DDL → Ruby class

Protocol Buffers → TypeScript

Protocol Buffers → Zod

Protocol Buffers → Yup

Protocol Buffers → Joi

Protocol Buffers → Pydantic

Protocol Buffers → Python dataclass

Protocol Buffers → Go struct

Protocol Buffers → Rust struct

Protocol Buffers → Kotlin data class

Protocol Buffers → Swift struct

Protocol Buffers → Dart class

Protocol Buffers → Java POJO

Protocol Buffers → C# record

Protocol Buffers → PHP class

Protocol Buffers → Ruby class

Avro → TypeScript

Avro → Pydantic

Avro → Python dataclass

Avro → Go struct

Avro → Rust struct

Avro → Kotlin data class

Avro → Swift struct

Avro → Dart class

Avro → Java POJO

Avro → C# record

Avro → PHP class

Avro → Ruby class

TypeScript → Zod

TypeScript → Yup

TypeScript → Joi

TypeScript → Pydantic

TypeScript → Python dataclass

TypeScript → Go struct

TypeScript → Rust struct

TypeScript → Kotlin data class

TypeScript → Swift struct

TypeScript → Dart class

TypeScript → Java POJO

TypeScript → C# record

TypeScript → PHP class

TypeScript → Ruby class

Mongoose Schema → TypeScript

Mongoose Schema → Zod

Mongoose Schema → Yup

Mongoose Schema → Joi

Mongoose Schema → Pydantic

Mongoose Schema → Python dataclass

Mongoose Schema → Go struct

Mongoose Schema → Rust struct

Mongoose Schema → Kotlin data class

Mongoose Schema → Swift struct

Mongoose Schema → Dart class

Mongoose Schema → Java POJO

Mongoose Schema → C# record

Mongoose Schema → PHP class

Mongoose Schema → Ruby class

Prisma Schema → TypeScript

Prisma Schema → Zod

Prisma Schema → Yup

Prisma Schema → Joi

Prisma Schema → Pydantic

Prisma Schema → Python dataclass

Prisma Schema → Go struct

Prisma Schema → Rust struct

Prisma Schema → Kotlin data class

Prisma Schema → Swift struct

Prisma Schema → Dart class

Prisma Schema → Java POJO

Prisma Schema → C# record

Prisma Schema → PHP class

Prisma Schema → Ruby class

Why Schemato

• 100% client-side. Your schema never leaves your browser.
• Zero signup, zero ads in the conversion area.
• One source of truth — copy generated types straight into your repo.
• Open structure: missing a converter? Open an issue and it'll likely ship next week.

License

Last commit

Open issues

149/149 live converters

Latest from the changelog

Schemato is built in public. New features ship every few days.

Multi-sample JSON inference

2026-06-08

• JSON converters now accept newline-delimited JSON samples and merge them into one shared shape.
• Fields missing from some samples are emitted as optional across TypeScript, Zod, Go, Pydantic, Rust, Swift, Kotlin, Java, C#, Dart, PHP, Ruby, Yup, Joi, and dataclass outputs.

Comparison pages for developer-tool discovery

2026-06-08

• Published /compare/transform-tools to explain when Schemato is a better fit for schema-to-code workflows.
• Updated the sitemap so the new comparison page can be discovered alongside quicktype and json2ts comparisons.

Search-backed JSON guides

2026-05-26

• Published /guides/json-to-typescript for the broad json to typescript search intent.
• Published /guides/json-to-go-struct for the broad json to go / json to go struct search intent.

Guides

Long-form, copy-paste-friendly walkthroughs.

Infer optional fields from multiple JSON samples

Paste NDJSON API responses and generate a safer shared type.

How to convert JSON to TypeScript types

Turn a real API response into interfaces, then decide when runtime validation should come next.

How to convert JSON to a Zod schema

From a raw JSON sample to a validated, typed schema you can reuse in fetch, forms, and tRPC.

Zod validation for runtime data

Validate API responses, forms, env vars, and webhooks with parse and safeParse.

How to convert JSON to a Go struct

Generate Go structs from JSON, then polish pointers, slices, time fields, and json tags.

Compare alternatives

Practical comparisons for teams choosing a browser-based schema converter.

Schemato vs quicktype

Mature CLI and model generation vs browser-first validation output.

Schemato vs json2ts

Focused JSON-to-TypeScript tools vs a multi-format converter matrix.

Schemato vs transform.tools

Broad transform toolbox vs dedicated schema-to-code workflows.