OpenAPI Schema to TypeScript Types

Generate TypeScript interface and type definitions from OpenAPI 3.0 / Swagger JSON specifications.

How It Works & Processing Standards

Generate TypeScript interface and type definitions from OpenAPI 3.0 / Swagger JSON specifications.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 100,000 characters

OpenAPI Schema to TypeScript Types is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use OpenAPI Schema to TypeScript Types

  1. 1
    Paste OpenAPI SpecEnter OpenAPI 3.0 JSON specification.
  2. 2
    Copy TypeScript CodeCopy the generated interfaces and type aliases.

Common Use Cases

  • Type-safe API client development, frontend SDK generation, and contract testing
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