https://github.com/daniel-e/captcha

CAPTCHA library written in Rust.
https://github.com/daniel-e/captcha

captcha captcha-library rust

Last synced: 4 months ago
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CAPTCHA library written in Rust.

• Host: GitHub
• URL: https://github.com/daniel-e/captcha
• Owner: daniel-e
• License: mit
• Created: 2017-05-10T11:35:51.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2025-03-19T21:15:06.000Z (about 1 year ago)
• Last Synced: 2025-10-24T09:38:22.669Z (6 months ago)
• Topics: captcha, captcha-library, rust
• Language: Rust
• Size: 2.21 MB
• Stars: 108
• Watchers: 3
• Forks: 22
• Open Issues: 10
• Metadata Files:
  • Readme: README.md
  • Changelog: ChangeLog
  • License: LICENSE.md

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README

          
# CAPTCHA library written in Rust

[![Build Status](https://travis-ci.org/daniel-e/captcha.svg?branch=master)](https://travis-ci.org/daniel-e/captcha)

[![GitHub license](https://img.shields.io/github/license/daniel-e/captcha)](https://github.com/daniel-e/captcha/blob/master/LICENSE.md)

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[![dependency status](https://deps.rs/repo/github/daniel-e/captcha/status.svg)](https://deps.rs/repo/github/daniel-e/captcha)

A library to generate CAPTCHAs like these:

![captcha](doc/captcha3.png)   ![captcha](doc/captcha2.png)   ![captcha](doc/captcha_mila_medium.png)

### Requirements

Rust (https://www.rust-lang.org/)

### Documentation

https://docs.rs/captcha

## Usage

Add the following dependency to the `Cargo.toml` file:

```toml

[dependencies]

captcha = "*"

```

In your source file do:

```rust

extern crate captcha;

use captcha::Captcha;

use captcha::filters::Noise;

use std::path::Path;

fn main() {

    Captcha::new()

        .add_chars(5)

        .apply_filter(Noise::new(0.1))

        .view(220, 120)

        .save(Path::new("/tmp/captcha.png"))

        .expect("save failed");

}

```

## Running the example

    git clone git@github.com:daniel-e/captcha.git

    cd captcha

    cargo run --example captcha

This example creates 12 CAPTCHA images (PNG images) in the current directory.

The generated images will look like the following three images:

![captcha](doc/captcha1.png)   ![captcha](doc/captcha2.png)

 

![captcha](doc/captcha3.png)