Password Generator Online — Create Strong Passwords

What is a Password Generator and Why Do You Need It?

A password generator is a tool for creating random, cryptographically strong passwords. Unlike human-created passwords, automatically generated passwords don't contain predictable patterns, dictionary words, or personal information, making them resistant to cracking.

Modern passwords must be long and complex enough to resist brute-force and dictionary attacks. A password generator solves this task by creating unique character combinations in fractions of a second.

Where is a Password Generator Used?

• New Account Registration — creating reliable passwords for social networks, email, online banking, and other services
• Updating Old Passwords — replacing weak or compromised passwords with new, more secure ones
• DevOps and Administration — generating temporary passwords for users, API keys, access tokens
• Testing — creating test data for registration forms and authentication systems
• Corporate Security — bulk generation of unique passwords for employees during initial system setup

How Does the Password Generator Work?

The generator uses a cryptographically secure random number generator (Web Crypto API) built into modern browsers. This ensures that passwords are truly random and cannot be predicted.

The generation process consists of the following steps:

1. A character set is formed based on selected options (letters, numbers, symbols)
2. An array of random numbers is generated using crypto.getRandomValues()
3. Each number is converted to a character index from the set
4. The obtained characters are combined into the final password

This approach provides high entropy (unpredictability) of the password. For example, a 16-character password using all character types (94 possible characters) has entropy of about 105 bits, making it practically uncrackable by modern methods.

What Makes a Password Strong?

A strong password should meet the following criteria:

• Length of at least 12 characters — the longer, the better. 16+ characters recommended
• Character diversity — using uppercase and lowercase letters, numbers, and special characters
• Unpredictability — no dictionary words, names, or birth dates
• Uniqueness — each service should have its own unique password
• No repetitions — avoid patterns like 'aaa111' or '123abc'

Our generator automatically creates passwords meeting all these requirements. The real-time strength indicator shows how strong the generated password is.

Is Using an Online Password Generator Safe?

Our generator is completely safe as it works exclusively in your browser. All passwords are generated locally using JavaScript, and not a single character is sent to the server.

You can verify this yourself:

• Open DevTools (F12) and go to the Network tab
• Generate several passwords
• Ensure there are no outgoing requests with password data

Moreover, our site's source code is open, and you can examine the generation logic. We use only standard Web APIs without third-party libraries for password generation.

How to Properly Store Generated Passwords?

The safest way to store passwords is using a password manager. Recommended solutions:

• Bitwarden — Bitwarden — free, open-source, with self-hosting
• 1Password — 1Password — user-friendly interface, family plans
• KeePass — KeePass — fully offline, storage on your device
• Dashlane — Dashlane — with breach monitoring feature

Never store passwords:

• In text files on your computer
• In phone notes without encryption
• In cloud documents (Google Docs, Excel in OneDrive)
• In email
• On paper under the keyboard (unless it's a critical master password in a safe)

Do You Need to Change Passwords Regularly?

Modern cybersecurity recommendations say: change passwords only when compromise is suspected, not on a schedule. Frequent password changes lead to users creating predictable variations (password1, password2) or writing passwords in insecure places.

Instead, follow these rules:

• Use a unique strong password for each service
• Enable two-factor authentication (2FA) wherever possible
• Change the password immediately if the service reports a data breach
• Use a password manager to track compromised passwords
• Periodically check your email on haveibeenpwned.com

Frequently Asked Questions