JSON to Rust Struct
Paste any JSON object or array and generate matching Rust structs deriving `Serialize`, `Deserialize`, and `Debug` from the `serde` crate. Field names are converted to snake_case, with `#[serde(rename = "originalKey")]` added when the original key differs. Nested objects become their own top-level structs and arrays of objects become `Vec<Struct>`. Heterogeneous arrays and null fields fall back to `serde_json::Value`. Runs entirely in your browser — free, online, no upload.
Privacy
Runs entirely in your browser — nothing is sent to any server.
Cost
Free. No sign-up, no watermark.
Type
Generator
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Frequently asked
Is JSON to Rust Struct free to use?
Yes. JSON to Rust Struct is completely free with no sign-up, no watermark, and no usage limits. Toolsly does not charge for any of its tools.
Do my files and data stay private?
Yes — JSON to Rust Struct runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.
How does JSON to Rust Struct work?
Open JSON to Rust Struct, paste or fill in the input fields, and the result updates instantly. Everything runs in your browser — no upload, no waiting.
Which browsers does JSON to Rust Struct support?
Any modern browser works — Chrome, Firefox, Safari, and Edge on desktop and mobile. JSON to Rust Struct uses standard web APIs and does not require any plugin, extension, or sign-up.