JSON to Rust Struct Converter — Serde Serialization

Transform JSON payloads into type-safe Rust structs with Serde serialization & deserialization macros.

Source JSON100% Client-Side Local

rust OutputGenerated AST

use serde::{Serialize, Deserialize};

#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct RootRecord {
    pub status: String,
    #[serde(rename = "statusCode")]
    pub status_code: i64,
    pub message: String,
    pub timestamp: String,
    pub data: Data,
}

#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct Data {
    pub id: String,
    pub username: String,
    pub role: String,
    pub active: bool,
    pub metrics: Metrics,
}

#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct Metrics {
    pub logins: i64,
    #[serde(rename = "lastActiveHours")]
    pub last_active_hours: f64,
    #[serde(rename = "storageUsedMb")]
    pub storage_used_mb: f64,
}

High-Performance Serde Struct Generation for Rust

Rust achieves zero-cost abstractions and memory safety without a garbage collector. When interfacing with external REST APIs, WebSockets, or Kafka streams, serde provides zero-copy deserialization directly into native structs.

FormJson automatically produces snake_case Rust field names, annotates fields with #[serde(rename = "...")] when necessary, and leverages Option<T> and Vec<T> for collection types.

Deserializing JSON in Axum Web Framework

use axum::{extract::Json, routing::post, Router};
use serde::{Deserialize, Serialize};

// Paste your FormJson generated struct:
#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct RootRecord {
    pub user_id: i64,
    pub display_name: String,
    pub is_admin: bool,
}

async fn handle_webhook(Json(payload): Json<RootRecord>) -> &'static str {
    println!("Received payload for user: {}", payload.display_name);
    "OK"
}

FAQ

Which Rust serialization crate does this generator target?

The output targets serde and serde_json, the de facto standard serialization ecosystem for Rust.

How are Rust keywords in JSON keys handled?

If a JSON field collides with a Rust keyword (like 'type', 'match', or 'ref'), the generator applies raw identifier syntax (r#type) and maps it with #[serde(rename = "type")].

What derive macros are included by default?

Structs include #[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)] for maximum utility in Actix, Axum, and CLI applications.

Is my JSON payload kept secure?

Yes, all Rust struct generation is executed locally on your machine in the browser with zero network transfer.