Password Generator
Generate strong, secure passwords instantly
What is Password Generator?
A password generator creates cryptographically random passwords that are virtually impossible to guess or crack using brute-force attacks. Weak passwords — short words, common phrases, or reused credentials — are responsible for the majority of data breaches. A strong password uses a mix of uppercase and lowercase letters, numbers, and special characters, and is at least 12–16 characters long.
Human-chosen passwords are predictable. Studies show that most people use passwords based on names, dates, or common words, often with simple substitutions (like "p@ssw0rd"). Automated cracking tools can test billions of such combinations per second. A truly random 16-character password from the full character set, by contrast, would take thousands of years to crack even with the most powerful computers available.
Altairys's Password Generator uses your browser's built-in 'crypto.getRandomValues()' API — the same cryptographically secure random number generator used by security professionals. Passwords are generated and displayed locally in your browser and are never transmitted to any server. You can configure the length (4–128 characters), choose which character sets to include, exclude ambiguous characters (0, O, l, 1) for readability, and generate multiple passwords at once. For maximum security, pair this tool with a trusted password manager to store your generated passwords.
How to Use Password Generator
- Set password length
Drag the slider to choose a length between 4 and 128 characters. 16+ is recommended.
- Choose character types
Select which character sets to include: uppercase, lowercase, numbers, symbols.
- Generate password
Click Generate to create a new cryptographically random password instantly.
- Copy and save
Copy the password to clipboard and store it in your password manager.
Key Benefits
Uses crypto.getRandomValues() — the gold standard for secure randomness in browsers.
Passwords are generated locally and never transmitted anywhere.
Set length, character sets, and exclude ambiguous characters for your needs.
New passwords appear immediately — generate as many as you need, instantly.
Frequently Asked Questions
Security experts recommend at least 12 characters for regular accounts and 16–20 characters for critical accounts like banking or email. Longer is always better.
Yes. The tool uses crypto.getRandomValues(), a cryptographically secure random number generator built into your browser, which produces genuinely unpredictable output.
Including symbols significantly increases password strength. However, some websites restrict certain characters — if you encounter issues, regenerate without symbols.
No. Passwords are generated and displayed locally in your browser. They are never sent to Altairys servers or any third party.
Use a reputable password manager such as Bitwarden (free, open-source), 1Password, or your browser's built-in password manager.
If your password is under 10 characters, contains dictionary words, uses predictable substitutions (3 for E, @ for A), or is reused across sites, it is considered weak.