Password Generator
Secure local password generator with strength meter.
Password Generator creates cryptographically secure passwords entirely in your browser. Adjust length and character sets, review a local strength estimate, and copy the result—without ever uploading secrets to a server.
How it works
Choose password length and which character classes to include, then click Generate. The tool builds a charset from your selections and picks each character using crypto.getRandomValues. A strength meter runs locally on the result and never sends data anywhere.
Benefits
- Cryptographically secure randomness via Web Crypto
- Flexible length and charset options
- Local-only strength estimate with practical hints
- Sensitive-tool defaults keep history off
Use cases
- Create strong passwords for new accounts
- Generate API keys or temporary credentials for dev environments
- Produce high-entropy secrets for local testing
- Quickly satisfy complexity rules with mixed character types
Best practices
- Store generated passwords in a dedicated password manager
- Prefer 16+ characters with all character types enabled
- Regenerate if a password may have been exposed
- Do not enable history on shared or public computers
Common mistakes
- Reusing generated passwords across multiple sites
- Disabling symbols when the target app allows them
- Saving passwords in browser history on shared devices
- Trusting strength meters instead of policy and breach checks
Privacy
Passwords are generated locally and never uploaded. This tool is marked sensitive: on-device history stays off until you explicitly opt in. ToolHub does not receive your generated passwords.
Frequently asked questions
- Does the Password Generator upload my passwords?
- Never. Passwords are generated locally with crypto.getRandomValues in your browser. ToolHub does not transmit, log, or store generated secrets.
- How is password strength calculated?
- Strength is a local heuristic based on length and character variety. It is an estimate only and never leaves your device. Always follow your organization's password policy.
- Why is history disabled by default?
- This tool is marked sensitive. On-device history stays off unless you explicitly opt in, because saved passwords on shared browsers are a security risk.
- What character sets can I include?
- Toggle lowercase, uppercase, numbers, and symbols independently. At least one set must remain enabled to generate a password.
- How random are the generated passwords?
- Each character is chosen using crypto.getRandomValues, which provides cryptographically secure randomness suitable for password generation in modern browsers.
- What length should I use?
- Use at least 16 characters for most accounts and 20+ for high-value secrets. Longer passwords with mixed character types resist brute-force attacks better.
- Can I copy the password safely?
- Use Copy to place the password on your clipboard, then paste it into your password manager or app. Clear your clipboard afterward on shared machines.
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