Expand description
Crate to generate CAPTCHAs.
Examples
For a more detailed list of predefined CAPTCHAS please have a look at by_name
.
Create CAPTCHAs
The crate offers two ways to create CAPTCHAs. The first way is the most easiest one. Just one
line of code is necessary to create a random CAPTCHA of a given category. The category can be
either Easy
, Medium
or Hard
. The size of the CAPTCHA is 220x120 pixels and the number of
characters is randomly selected between 4 and 6 letters (inclusive).
use captcha::{gen, Difficulty};
gen(Difficulty::Easy).as_png();
To be more flexible you can build CAPTCHAs manually as well.
use captcha::Captcha;
use captcha::filters::{Noise, Wave, Dots};
Captcha::new()
.add_chars(5)
.apply_filter(Noise::new(0.4))
.apply_filter(Wave::new(2.0, 20.0).horizontal())
.apply_filter(Wave::new(2.0, 20.0).vertical())
.view(220, 120)
.apply_filter(Dots::new(15))
.as_png();
Modules
Filters to disturb and transform CAPTCHAs.
Structs
Represents the area which contains text in a CAPTCHA.
A CAPTCHA.
Enums
Names of predefined CAPTCHAs.
The difficulty of a CAPTCHA.
Functions
Creates a predefined CAPTCHA by its name.
Creates a random CAPTCHA with the given difficulty.