#captcha #salvo #middleware


A captcha middleware for Salvo framework

1 unstable release

0.1.0 Jan 29, 2024

#9 in #salvo

MIT license

754 lines


A captcha middleware for salvo framework. It uses captcha crate to generate captcha images.


Add to your project

First, add the following to your Cargo.toml:

salvo-captcha = "0.1"

Or use cargo-add to add the dependency to your Cargo.toml:

$ cargo add salvo-captcha


See the examples directory for a complete example.


The storage of the captcha is handled by a CaptchaStore trait. You can implement your own storage or use the cacache-rs by enabling the cacache-storage feature.

salvo-captcha = { version = "0.1", features = ["cacache-storage"] }

Captcha name and difficulty

In this table you can see the different between the difficulties and the name of the captcha.

Name Difficulty Image
Amelia Easy Simple
Amelia Medium Simple
Amelia Hard Simple
Lucy Easy Simple
Lucy Medium Simple
Lucy Hard Simple
Mila Easy Simple
Mila Medium Simple
Mila Hard Simple


This project is licensed under the MIT license for more details see LICENSE or http://opensource.org/licenses/MIT.


~1M SLoC