captcha-generator

A highly customizable CAPTCHA generator using canvas in TypeScript.

Installation

npm install @ddededodediamante/captcha-generator

Usage

import Captcha from '@ddededodediamante/captcha-generator';
import fs from 'fs';

const captcha = new Captcha({
  width: 250,
  height: 100,
  backgroundColor: '#f0f0f0',
  textColor: '#333',
  font: 'Arial',
  fontSize: 40
});

const { text, buffer } = captcha.generate("image/png");
console.log('CAPTCHA text:', text);
fs.writeFileSync('captcha.png', buffer);

API

new Captcha(options?)

Creates a CAPTCHA generator with optional settings:

Option	Type	Default	Description
width	number	200	Canvas width in pixels
height	number	80	Canvas height in pixels
backgroundColor	string	#ffffff	Background color
textColor	string	#000000	Color of the CAPTCHA text
font	string	Sans	Font family
fontSize	number	32	Font size in pixels
characters	string	ABCDEFGHI...	Characters used in the CAPTCHA text
charLength	number	6	Number of characters in the CAPTCHA
noiseLines	number	4	Number of random noise lines
noiseDots	number	100	Number of random noise dots
noiseColor	string	#888888	Color for noise lines and dots

generate(mime?, quality?)

Generates the CAPTCHA, returns { text: string; buffer: Buffer }.