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JSON → TypeScript Interface Generator · Birdor Tools

Paste JSON and instantly generate TypeScript interfaces or types. Choose between original keys, camelCase, or snake_case, and keep inline object types for quick scaffolding. Runs fully in your browser.

TypeScript style

Choose how property names are generated and what the root type is called.

Root name

Output type

Export default

Null handling

Infer ISO dates as Date

Schema output

Indent

JSON Input

Paste any valid JSON object, array, or value. Birdor will infer TypeScript types for you.

JSON is parsed entirely in your browser using JSON.parse.

No history yet.

TypeScript Output

Generated interface or type based on your JSON.

/* TypeScript interfaces will appear here */

Nested objects are represented as inline types. When keys are transformed to camelCase or snake_case, the original JSON key is preserved in a comment like // from "user_name".