BioSvg

Captcha based on SVG.

Original idea

SVG绘制原理与验证码

Usage

cargo add biosvg

let (answer, svg) = BiosvgBuilder::new()
    .length(4)
    .difficulty(6)
    .colors(vec![
        "#0078D6".to_string(),
        "#aa3333".to_string(),
        "#f08012".to_string(),
        "#33aa00".to_string(),
        "#aa33aa".to_string(),
    ])
    .build()
    .unwrap();
println!("answer: {}", answer);
println!("svg: {}", svg);

Example