> Package captcha provides an easy to use, unopinionated API for captcha generation.

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## Why another captcha generator?
I want a simple and framework-independent way to generate captcha. It also should be flexible, at least allow me to pick my favorite font.

## install
```
go get github.com/steambap/captcha
```

## usage
```Go
func handle(w http.ResponseWriter, r *http.Request) {
	// create a captcha of 150x50px
	data, _ := captcha.New(150, 50)

	// session come from other library such as gorilla/sessions
	session.Values["captcha"] = data.Text
	session.Save(r, w)
	// send image data to client
	data.WriteImage(w)
}

```

[documentation](https://pkg.go.dev/github.com/steambap/captcha) |
[example](example/basic/main.go)

## sample image
![image](example/captcha.png)

![image](example/captcha-math.png)

## Compatibility

This package is in a module and I recommand using the following version of Go:

* 1.9.7+ for Go 1.9
* 1.10.3+ for Go 1.10
* Go 1.11 or later

## Contributing
If your found a bug, please contribute!
see [contributing.md](contributing.md) for more detail.

## License
[MIT](LICENSE)