JSON to TypeScript Types

Infer useful TypeScript types from JSON (best-effort) and export clean .ts output.

Fast processing • Browser-based • Easy copy and download

Workspace

Paste data, upload a file, and produce clean output instantly.

Input

Output

Processed Locally

Your file never leaves your device. Everything is processed in your browser — we never see or store your data.

Frequently Asked Questions

JSON Formatter

Beautify JSON with stable indentation and optional key sorting.

JSON Pretty Print + Sort Keys

Pretty-print JSON and optionally sort keys recursively for stable output.