JSON to Rust Struct — Free Online (serde)
Generate Rust structs with serde Serialize/Deserialize derives from any JSON sample. Snake_case field names, serde rename tags.
Generate Rust structs with serde Serialize / Deserialize derives from any JSON sample. Each unique object shape becomes its own struct, snake_case field names with serde renames preserving the original keys, and idiomatic Rust types (i64, f64, bool, String, Vec<T>).
Need TypeScript instead? JSON to TypeScript. Go? JSON to Go. Python? JSON to Python.
How to Generate Rust Structs from JSON
Paste a JSON sample
Drop a representative JSON value into the editor — API response, config, mock fixture.
Click Convert to Rust
PDFFlare emits Rust structs with #[derive(Debug, Serialize, Deserialize)] and snake_case field names.
Drop into your Rust project
Paste into a .rs file in a project that depends on serde + serde_json.
When Do You Need JSON to Rust?
Typing an external API: You're building a Rust client for a service that ships JSON. Generate the response types straight from a sample.
Migration projects: Porting a Node or Python service to Rust? Use real production payloads to seed the type definitions.
Webhook handlers: Stripe, GitHub, etc. publish webhook payloads as JSON examples. Generate Rust types and wire them into a serde-powered handler.
Embedded / WASM: Rust's strong typing pays off when memory matters. Get accurate types from JSON before optimising further.
Why Use PDFFlare for JSON to Rust?
serde Out-of-the-Box
Every struct derives Serialize + Deserialize, with rename attributes preserving the original JSON keys.
Idiomatic Rust
snake_case field names, pub fields, idiomatic numeric types — fits straight into a Rust crate.
100% Browser-Based
Sample data stays on your device.
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