Generate null-safe Dart classes with fromJson and toJson serialization methods from JSON.
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 object into the workspace.
Specify the root Dart model class name.
Copy or download the generated .dart class file.
Yes, all generated Dart code strictly adheres to Flutter 3+ and Dart 3 null-safety standards.
Yes, nested JSON objects and arrays are recursively mapped to nested Dart classes and typed lists.
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Format, validate, repair, and minify JSON data instantly.
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Test regex patterns with flags, group captures, and live matches.
Compare text or source code side-by-side with visual diffs.
