JSON to C# 12 Records & Classes Generator
Generate C# positional records and classes with System.Text.Json attributes from JSON.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
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.
How to Use JSON to C# 12 Records & Classes Generator
Paste your JSON payload into the input editor.
Customize the primary C# record name.
Copy the exported C# 12 source code.
Frequently Asked Questions
Which .NET version is targeted?
The generated code is optimized for .NET 8 / C# 12 using modern positional records.
Does it support System.Text.Json?
Yes, each property is decorated with `[property: JsonPropertyName("...")]`.
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