png-captcha

A simple node library for generating PNG captcha images.

Installation

To install the png-captcha, you can use npm:

npm install png-captcha

Usage

import fs from 'fs'
import pngCaptcha from 'png-captcha'

const options = {
    size: 6, // Number of characters in the captcha text
    noise: 2, // Level of noise in the captcha image
    // Add more options as needed
}

const captcha = pngCaptcha.create(options)

// Captcha properties
console.log('Captcha Text:', captcha.text)
console.log('Captcha Width:', captcha.width)
console.log('Captcha Height:', captcha.height)

// Use as base64 image URL
const base64imageURL = `data:image/png;base64,${captcha.image.toString('base64')}`

// Save captcha to a PNG file
fs.writeFileSync('captcha.png', captcha.image)

Options

• size: Number of characters in the captcha text.
• noise: Number of noise lines in the captcha image.
• background: Background color the image.
• color: true to enable color in the image.
• width: Width of the image.
• height: Height of the image.
• fontSize: Text size of captcha text.

Acknowledgements

This project uses svg-captcha and @resvg/resvg-js libraries.