Jsonic is a suite of JSON developer tools that run entirely in your browser. Format, validate, convert, and diff JSON without sending a single byte to a server. **Tools included:** - JSON Formatter / Minifier / Validator - JSON → TypeScript (with proper type inference) - JSON → CSV (with nested field flattening) - JSON → YAML - CSV → JSON - JSON Diff (structural, not text-based) No sign-up. No ads. No cookie banners. Just open it and work.