JSON to TypeScript

Giới thiệu về JSON to TypeScript

The JSON to TypeScript Converter instantly transforms any JSON object or array into strongly-typed TypeScript interfaces or type aliases. Rather than writing type definitions by hand — a tedious and error-prone process — this tool analyzes your JSON structure and infers the correct TypeScript types for every field automatically. When you work with REST APIs, GraphQL responses, or configuration files, you often receive raw JSON payloads. Manually maintaining type definitions that match evolving API schemas leads to drift and bugs. This converter bridges that gap: paste your JSON response, adjust options like the root interface name, optional properties, or whether to use `type` vs `interface`, and get production-ready TypeScript in seconds. The tool handles nested objects (generating separate named interfaces for each), arrays (including arrays of objects and mixed-type arrays), primitive types (string, number, boolean), and null values. All conversion runs entirely in your browser — your data never leaves your machine, making it safe for proprietary API schemas and internal data models. Whether you are bootstrapping a new TypeScript project or retrofitting types onto an existing codebase, this tool dramatically reduces boilerplate and helps you ship type-safe code faster.

Làm sao để JSON to TypeScript?

1. Paste your JSON object or array into the left input panel, or click "Load Sample" to try an example.
2. Set your preferred root interface name in the "Root name" field (default is "Root").
3. Toggle options as needed: use "type" instead of "interface", mark all properties as optional, or add the "export" keyword.
4. The TypeScript output updates in real time in the right panel as you type or change options.
5. Review the generated interfaces — nested objects produce additional named interfaces above the root.
6. Click "Copy" to copy the output to your clipboard and paste it directly into your TypeScript file.

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