{}

JSON Workspace

JSON to TypeScript Generator

Instantly convert JSON objects into strongly-typed TypeScript interfaces. Perfect for typing frontend API clients and ensuring type safety across your stack.

JSON Editor

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Viewer

{
"project":
"JSON Workspace"
,
"version":
"1.0.0"
,
"features":[
"Monaco Editor"
,
"Interactive Tree"
,
"jq Querying"
,
"Schema Validation"
],
"nested":{
"key1":
"value1"
,
"key2":
42
,
"isValid":
true
}
}

How to Convert JSON to Interfaces

  1. Paste a sample JSON payload (e.g., from an API response) into the editor.
  2. Click the Generate Types button in the top toolbar.
  3. Choose your desired output language (TypeScript is the default).
  4. Provide a name for the Root interface.
  5. Copy the generated code and paste it directly into your project.

Why Generate Types?

Manually writing TypeScript interfaces for complex API responses is tedious and error-prone. Our generator deeply analyzes the JSON, infers data types (strings, numbers, booleans), and automatically scaffolds the necessary `interface` or `type` definitions for you.

Frequently Asked Questions

Can it handle nested JSON arrays and objects?

Yes! The generator analyzes the entire JSON structure and will recursively create separate interfaces for nested objects and arrays to keep your TypeScript code clean and maintainable.

Does it support languages other than TypeScript?

Yes, powered by Quicktype, this tool can also generate types for Python, Swift, Go, C#, Java, Rust, and more.