fjson

fjson is a zero-dependency JSON Parser and Fixer. It takes any input and produces valid JSON. No AI involved.

Features

• Deserializes everything by default (root and nested).
• Repairs incomplete JSON by closing missing brackets and strings.
• Normalizes boolean and null values (e.g., True → true, FALSE → false).
• Normalizes numbers (removes trailing zeros, fixes invalid formats).
• Formatting (beautifier).

Example

fn main() {
    let broken = r#"{ "user" "foo", "age": 0020, }"#;
    let fixed = fjson_core::fix(broken);
    println!("{}", fixed);
}

Output:

{
  "user": "foo",
  "age": 20
}

License

Copyright © 2025-present, fjson Contributors.

This project is MIT licensed.