JSON to Rust Serde
Turn JSON samples into Rust structs with serde derive, JSON key renames, Option for optional/null fields, Vec for arrays, and serde_json::Value for heterogeneous data. Nested shapes are deduplicated like our Go generator. Large inputs run in a Web Worker; everything stays in your browser.
JSON to Rust Serde Use Cases
- Bootstrap Rust API models from real JSON request and response bodies
- Create typed serde models for webhooks, queues, and CLI tools from sample payloads
- Compare with Go or TypeScript output from the same JSON in fmtly
- Prototype serde schemas before committing to manual struct definitions
JSON to Rust Serde FAQ
How are JSON types mapped to Rust?
Strings map to String, booleans to bool, integers to i64, floating numbers to f64, arrays to Vec, objects to generated structs, and mixed or unknown shapes to serde_json::Value.
Why serde(rename) on every field?
Field names use idiomatic snake_case in Rust while your JSON often uses camelCase or other styles. Explicit rename keeps serde aligned with the original keys without a global rename policy that might miss edge cases.
Do I need serde and serde_json in Cargo.toml?
Yes. Add serde with derive feature and serde_json for Value types: e.g. serde = { version = "1", features = ["derive"] } and serde_json = "1".