Koa-Captcha

Simple captcha for koa, fork from node-captcha

Use

var captcha = require('koa-captcha'),
    Koa = require('koa'),
    session = require('koa-generic-session'),
    app = new Koa

app.use(session()) // require session
app.use(captcha({
    url: '/captcha', // interface url
    length: 5, //code length
    fontSize: 6, //code size
    width: 250, // captcha width
    height: 150, // captcha height
    color: 'rgb(0,0,0)', // code color,
    background: 'rgb(255,255,255)', // captcha background color
    lineWidth: 1 // Interference lines width
}))