ToolHub JSON to Rust Structs Open Tool

JSON to Rust Structs

Convert JSON data into Rust struct definitions with proper types and serde attributes

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About This Tool

The JSON to Rust Structs converter instantly generates Rust struct definitions from your JSON data. It accurately maps JSON types to Rust types, handles nested objects and vectors, and generates proper serde serialization attributes. This tool saves Rust developers significant time when building APIs or working with JSON data in Rust applications.

Key Features

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Use Cases

json rust struct serde code-generation

Frequently Asked Questions

How are JSON types mapped to Rust types?

Strings map to String, integers to i64, floats to f64, booleans to bool, null to Option<T>, arrays to Vec<T>, and objects to nested structs. Field names are converted to snake_case with serde rename attributes.

What does the Serde derive option do?

When enabled, each struct is annotated with #[derive(Debug, Serialize, Deserialize)] and serde rename attributes for snake_case fields. This allows the generated structs to work directly with the serde_json crate for serialization and deserialization.

What does the Option type detection do?

When enabled, fields with null values are wrapped in Option<T>, indicating they may be absent. This is essential for Rust's type safety when deserializing JSON where not all fields are guaranteed to be present.

Can I customize the root struct name?

Yes. You can set a custom root struct name in the options. Nested struct names are derived from JSON key names in PascalCase, and field names follow Rust's snake_case convention.

Is my data safe when using this tool?

Absolutely. All conversion happens locally in your browser. No JSON data is uploaded to any server, ensuring your information remains completely private and secure.