Secure Password Generator | Create Strong Random Passwords

Secure Password Generator Tool

Generate strong, random passwords without sending any data over the network. All password generation happens directly in your browser for maximum security and privacy. Create complex random passwords or memorable passphrases with our free tool.

Your Generated Password:

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Password length: 0 characters

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Password Length: 16

Password Type:

Character-based (random characters)

Word-based (random dictionary words)

Character Types:

Lowercase Letters (a-z)

Uppercase Letters (A-Z)

Numbers (0-9)

Special Characters (!@#$%^&*)

Advanced Options:

Avoid Similar Characters (i, l, 1, L, o, 0, O)

Avoid Ambiguous Symbols ([]()/'"`~,;:.)

Require At Least One From Each Selected Type

Loading dictionary... 0%

Loading ~4MB of words for secure passphrase generation

Number of Words: 4

Word Separator:

Hyphen (-)

Space ( )

Word Options:

Capitalize Each Word

Add Numbers (increases security)

Word Length: Medium (5-8 letters) Short (3-4 letters) Medium (5-8 letters) Long (9+ letters) Any length

Generate New Password

Warning: Password exceeds recommended length of 100 characters

Password Strength:

Generate a password to see its strength

Why Use This Password Generator?

1. 100% Client-Side: All password generation happens in your browser - no data is ever sent to a server
2. No Tracking: No analytics, no cookies, no data collection
3. Open Source: The code is right on this page - you can see exactly how it works
4. Customizable: Control length, character types, and other settings to match your needs
5. Strong Security: Uses the browser’s built-in cryptographically secure random number generator
6. Two Generation Methods: Choose between traditional random character passwords or easier-to-remember word-based passphrases

Password Types Explained

Character-Based Passwords

Traditional passwords made up of random characters are highly secure but can be difficult to remember. They’re ideal for use with password managers. You can customize:

• Password length (8-64 characters)
• Character types (lowercase, uppercase, numbers, symbols)
• Advanced options to avoid ambiguous or similar-looking characters

Word-Based Passphrases

Passphrases consist of random dictionary words and can be easier to remember while still providing good security. Features include:

• Choose the number of words (3-8 words)
• Select word length (short, medium, or long words)
• Add numbers and symbols for extra security
• Customize the separator between words

Word-based passwords like “Correct-Horse-Battery-Staple” can be both secure and memorable, as illustrated in the famous XKCD comic.

How to Use Strong Passwords Effectively

• Use a unique password for each account - never reuse passwords
• Consider using a reputable password manager to store your passwords securely
• For critical accounts, enable two-factor authentication when available
• Change passwords regularly, especially for your most sensitive accounts
• The longer and more complex a password is, the harder it is to crack

Understanding Password Strength

The strength of a password depends on several factors:

• Length: Longer passwords are exponentially more difficult to crack
• Complexity: Using a mix of character types increases the possible combinations
• Randomness: Truly random passwords are stronger than patterns or modified words
• Uniqueness: A password that hasn’t been used before is stronger

Our strength meter estimates how difficult your password would be to crack using current methods, but remember that password security is always evolving.

Security Best Practice: Unique Passwords

The most important security practice is using a unique password for every site and service. Password reuse is the most common way accounts get compromised - if one site has a data breach, hackers will try those same credentials on other popular websites.

Using a password manager helps you maintain unique, strong passwords for all your accounts without having to memorize them. Learn more about why unique passwords are crucial for your digital security.

When to Use This Password Generator

This password generator is an ideal tool for creating strong, unique passwords for all your accounts. It’s recommended for:

1. Creating new online accounts
2. Regularly updating existing passwords
3. Replacing weak or compromised passwords identified by your password manager
4. Generating secure passphrases for device encryption or cryptocurrency wallets
5. Creating unique passwords for different sections of a website or application

Remember that using a password manager is essential for securely storing all your unique passwords.

Why Unique Passwords Matter Learn why using unique passwords for every site is crucial for your online security and how to manage them effectively.

How This Password Generator Works

This password generator uses the Web Crypto API’s getRandomValues() method, which provides cryptographically strong random values. This is much more secure than using JavaScript’s standard Math.random(), which is not suitable for security-sensitive applications.

For Character-Based Passwords

The generator creates truly random strings of characters based on your selected options, using a cryptographically secure random number generator:

// Example of secure random generation (simplified)
const randomBuffer = new Uint32Array(1);
window.crypto.getRandomValues(randomBuffer);

For Word-Based Passwords

The generator selects random words from curated dictionaries of common English words, categorized by length:

• Short words (3-4 letters)
• Medium words (5-8 letters)
• Long words (9+ letters)

For additional security, you can add numbers and symbols to your word-based passwords.

Password Security FAQ

How long should my password be?

For standard accounts, aim for at least 12-16 characters. For critical accounts (banking, email), consider 16-20 characters or more.

Are passphrases better than random character passwords?

Both can be secure if properly implemented. Passphrases are easier to remember but need to be longer (4+ random words). Random character passwords are more compact but harder to remember without a password manager.

How often should I change my passwords?

Modern security advice suggests changing passwords only when there’s a reason to believe they may have been compromised, rather than on a fixed schedule. However, always change passwords immediately after a site reports a data breach.

What makes a password truly secure?

A secure password is:

• Unique (not used on any other site)
• Long (12+ characters)
• Random (not based on dictionary words unless using multiple random words)
• Complex (mixture of character types)
• Private (not shared with others)

Privacy & Security Tips

• Don’t share passwords via email, text messages, or other insecure channels
• Consider using passphrases (long sequences of random words) for passwords that must be memorized
• Save passwords securely in a reputable password manager
• When possible, supplement passwords with 2FA (two-factor authentication)
• Be aware of shoulder surfing - someone watching as you enter your password

Remember that the strongest password can’t protect you if you enter it on a phishing site or compromised device.

Why is this generator secure?

1. It uses the browser’s built-in window.crypto.getRandomValues() API, which provides cryptographically secure random values
2. No data ever leaves your device - the entire process happens in your browser
3. No analytics, tracking, or logging occurs
4. The component code is transparent and can be inspected for security