devkits-password-generator

Generate cryptographically secure passwords from the command line. Strong, random, customizable.

Install

npm install -g devkits-password-generator

Usage

CLI

# Generate a 16-character password
pwdgen

# Custom length
pwdgen -l 32

# Generate 5 passwords
pwdgen -c 5

# Only lowercase + numbers
pwdgen -L -S

# Exclude similar characters (0, O, o, I, l, 1)
pwdgen -e

# Short memorable password
pwdgen -l 8 -u -n -S

Programmatic API

const { generatePassword, getCharset, calculateEntropy } = require('devkits-password-generator');

// Generate a 20-char password
const pwd = generatePassword(20);

// Custom charset
const charset = getCharset({ uppercase: true, lowercase: true, numbers: true });
const pwd = generatePassword(16, charset);

// Calculate entropy
const entropy = calculateEntropy(16, 62);  // ~95 bits

Options

| Option | Alias | Default | Description | |--------|-------|---------|-------------| | --length | -l | 16 | Password length | | --uppercase | -u | true | Include A-Z | | --no-uppercase | -L | - | Exclude uppercase | | --numbers | -n | true | Include 0-9 | | --no-numbers | -N | - | Exclude numbers | | --symbols | -s | true | Include symbols | | --no-symbols | -S | - | Exclude symbols | | --exclude-similar | -e | false | Exclude 0OoIl1 | | --count | -c | 1 | Number of passwords |

Security Features

• Cryptographically secure — Uses Node.js crypto.randomBytes()
• High entropy — Default 16-char with full charset = ~104 bits
• No external dependencies — Zero supply chain risk
• Client-side only — Passwords never leave your machine
• No logging — Generated passwords are not stored anywhere

Password Strength Guide

| Entropy | Rating | Use Case | |---------|--------|----------| | < 28 bits | Very Weak | Not recommended | | 28-36 bits | Weak | Low-security only | | 36-60 bits | Fair | Basic accounts | | 60-80 bits | Strong | Important accounts | | 80+ bits | Very Strong | Critical accounts |

Recommendations:

• Minimum 16 characters for important accounts
• Use unique passwords for each service
• Consider a password manager for storage
• Enable 2FA wherever possible

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See Also

• DevKits — All 82 free developer tools in one place
• JSON Formatter — Format and validate JSON
• Base64 Encoder — Encode/decode Base64
• JWT Decoder — Decode JWT tokens
• UUID Generator — Generate UUIDs
• Hash Generator — Create MD5, SHA1, SHA256 hashes
• CSS Tools — CSS minifier, formatter, validator
• HTML Tools — HTML formatter, minifier
• URL Tools — URL encode/decode, parse
• Color Converter — Convert HEX, RGB, HSL colors
• Regex Tester — Test and debug regular expressions

Support DevKits

If you find this tool useful, please consider supporting the project:

Open Collective

Become a sponsor: Open Collective - DevKits

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License

MIT — DevKits Team