Leetify

Converts alphabet characters to leet speech: leet haxor example → 1337 h4x0r 3x4mp13

Install

$ npm install leetify

Usage

const leetify = require('leetify');

// Basic usage
leetify('This is Leet String!');
// returns '7h15 15 1337 57r1n6!'

// With options
leetify('Hello World!', { mode: 'basic', casesens: 'default' });
// returns 'h3110 w0r1d!'

// Upper case mode
leetify('Hello World!', { mode: 'basic', casesens: 'upper' });
// returns 'H3110 W0R1D!'

// Pro mode (advanced l33t speak)
leetify('Test Pro', { mode: 'pro', casesens: 'default' });
// returns '+€$+ |°|2()'

// Pro+ mode (randomized advanced l33t speak)
leetify('aaa', { mode: 'pro+', casesens: 'default' });
// returns random combination like '/\\/-\\@' (different each time)

Options

The leetify function accepts two parameters:

• text (string): The text to convert
• options (object): Optional configuration object

Available Options

{
  mode: 'basic' | 'pro' | 'pro+',    // Conversion mode (default: 'basic')
  casesens: 'default' | 'upper' | 'lower'  // Case sensitivity (default: 'default')
}

Modes

• basic: Simple leet speak conversion (e.g., 'e' → '3', 'a' → '4')
• pro: Advanced leet speak with consistent replacements (e.g., 'h' → '|-|')
• pro+: Advanced leet speak with randomized character replacements

Case Sensitivity

• default: Preserves original case sensitivity
• upper: Converts all characters to uppercase
• lower: Converts all characters to lowercase

Examples

// Special characters and punctuation are preserved
leetify('Hello, World!');
// returns 'h3110, w0r1d!'

// Empty strings are handled
leetify('');
// returns ''

// Special characters remain unchanged
leetify('!@#$%^&*()');
// returns '!@#$%^&*()'

// Mixed case with pro mode
leetify('MiXeD CaSe', { mode: 'pro', casesens: 'upper' });
// returns advanced leet speak; non-leet characters (like spaces) will be uppercased

License

MIT © Damian Polak