Generate immutable Freezed classes with fromJson/toJson and copyWith for Flutter apps.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Paste your raw JSON payload into the source editor.
Specify the root Freezed data class name.
Copy or download the generated Freezed model file.
Yes, it generates standard @freezed annotations with factory constructors.
Yes, nested JSON objects and arrays are extracted into distinct child Freezed classes.
Zero-egress companion tools in the Developer Tools suite
Format, validate, repair, and minify JSON data instantly.
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Compare text or source code side-by-side with visual diffs.
