Password Generator
Generate secure and strong random passwords. Customize character types, length, and exclusions.
Last updated:
How to Use
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- 1
Configure options
Set the password length, character types to include (uppercase, lowercase, numbers, symbols), and whether to exclude ambiguous characters.
- 2
Generate passwords
Click the 'Generate' button to create random passwords based on your settings. You can change the count to generate multiple passwords at once.
- 3
Copy passwords
Click the 'Copy' button next to a password to copy it to your clipboard. Use 'Copy All' to copy all generated passwords at once.
Privacy Notice
This tool runs entirely in your browser. No data is sent to any server and your information remains completely private.
Settings
0/O, 1/l/I, etc.
Entropy: 103 bits
About Password Generator
Password Generator creates cryptographically secure passwords using the browser's native Web Crypto API (crypto.getRandomValues), ensuring true randomness rather than pseudo-random values from Math.random(). Customize password length from 8 to 128 characters and select which character types to include: uppercase letters (A–Z), lowercase letters (a–z), numbers (0–9), and symbols (!@#$%&*). An option to exclude ambiguous characters (0/O, 1/l/I) prevents confusion when passwords are read aloud or hand-copied. Generate multiple passwords at once and copy them individually or all at once. A strength indicator shows the estimated security level of each generated password.
Key Features
- Cryptographically secure random generation (Web Crypto API)
- Customizable password length (8-128 characters)
- Character type selection (uppercase, lowercase, numbers, symbols)
- Option to exclude ambiguous characters (0/O, 1/l/I, etc.)
- Password strength and entropy display
Use Cases
- Generate strong passwords for online accounts
- Create unique passwords for each service (avoid reuse)
- Generate API keys, tokens, or secret values for .env files
- Create temporary passwords for team onboarding
- Generate Wi-Fi passwords or master passwords for password managers
FAQ
Are generated passwords stored anywhere?
No. Passwords are generated using Web Crypto API locally and are never transmitted to any server. They are cleared from memory when you close the page.
What is entropy?
Entropy measures the randomness of a password in bits. Higher values mean the password is harder to guess. Generally, 80 bits or more is considered secure.
Why exclude ambiguous characters?
Excluding similar-looking characters like 0 (zero) and O (letter O), or 1 (one) and l (lowercase L) and I (uppercase i) helps prevent reading errors and typos when entering passwords.
What password length does NIST recommend?
NIST (SP 800-63B) recommends a minimum of 8 characters for user-generated passwords and at least 6 characters for system-generated ones. In practice, 16 or more characters is recommended for important accounts. Length matters more than complexity — a long passphrase beats a short complex password.
Should I store generated passwords in a password manager?
Yes. Use a password manager like Bitwarden, 1Password, or Dashlane to store passwords securely. Generate a unique password for each service and let the manager handle remembering them. This eliminates password reuse, which is one of the most common causes of account breaches.
Editorial Review & References
- Reviewed by
- Toolsbase Editorial Team
- Last reviewed
References
- NIST SP 800-63B — Digital Identity Guidelines: Authentication and Lifecycle ManagementOpens in a new tab
- NIST SP 800-90A Rev. 1 — Recommendation for Random Number GenerationOpens in a new tab
- OWASP Password Storage Cheat SheetOpens in a new tab
- Web Crypto API — crypto.getRandomValues()Opens in a new tab
- CISA — Use Strong Passwords and a Password ManagerOpens in a new tab
Disclaimer
This tool uses the browser's Web Crypto API (crypto.getRandomValues) to produce cryptographically secure random values. Generated passwords stay on your device and are only exposed to you via the clipboard — they are not transmitted to or logged by any server. For important accounts, we strongly recommend pairing this tool with a password manager (1Password, Bitwarden, Dashlane, etc.) and enabling multi-factor authentication (MFA). After using this tool on a shared device, clear your clipboard to prevent password leakage.