Secure Password Generator & Strength Meter 🔒
Generate strong, uncrackable random passwords. Test password strength with crack time estimate. 100% private — nothing sent to server.
⚡ Generate a Strong Password
🔍 Test Your Password Strength
Free Strong Password Generator — Generate Secure Random Passwords Online
In 2026, data breaches expose billions of credentials every year — and weak or reused passwords remain the leading cause of account compromises. Our free strong password generator creates cryptographically random passwords with custom length and character sets, and our built-in strength meter tells you exactly how long it would take a modern computer to crack any password you enter. Whether you need a LastPass-style password generator, a Microsoft strong password generator, or a MySQL strong password generator for database credentials, this tool covers all these use cases in one place.
LastPass Password Generator Alternative — Free & Browser-Based
LastPass, Firefox, and Microsoft Edge all include built-in password generators that follow the same core principle — random character selection from a configurable character set. This tool generates passwords using the same approach, with the added advantage that everything runs in your browser with no account required. Unlike LastPass's free tier which now limits device syncing, this tool generates as many passwords as you need with no restrictions. Use it alongside any password manager — LastPass, Bitwarden, 1Password, or Dashlane — by generating here and saving there.
MySQL Strong Password Generator — 20-22 Character Credentials
Database administrators commonly need strong passwords specifically for MySQL root accounts, database users, and application connection strings. For a MySQL strong password of 20-22 characters, set the length slider to 20 or 22, enable uppercase, lowercase, numbers, and symbols, and enable "Exclude Similar Characters" to avoid confusion between 0 and O or l and 1 in connection strings. The generated password will pass MySQL's validate_password plugin requirements at any strength level.
Password Strength Checker with Crack Time Estimate
The strength checker section evaluates any password you type against five security criteria — minimum length, uppercase letters, lowercase letters, numbers, and special symbols — and calculates an estimated crack time based on the character set size and password length. A 12-character password using all four character types would take a modern computer billions of years to crack by brute force, while an 8-character all-lowercase password could be cracked in hours.
Password Security Best Practices
- Never reuse passwords — if one account is breached, all accounts using the same password are at risk.
- Use 16+ characters — each additional character exponentially increases crack time.
- Enable all character types — mixing uppercase, lowercase, numbers, and symbols maximizes entropy.
- Avoid dictionary words — even substituting letters with numbers (p@ssw0rd) is easily cracked by modern dictionary attacks.
- Use a password manager — generate unique passwords here and store them securely in LastPass, Bitwarden, or 1Password.
A Quick Note on Privacy & Trust
This tool runs entirely in your browser. No password you generate or test is ever transmitted to, logged by, or stored on any server. We have no access to any password produced by this tool. The generation uses JavaScript's built-in random number functions and is reviewed and tested regularly — most recently in June 2026.
Frequently Asked Questions
How does this password generator work?
It uses JavaScript's random number generator to select characters from your chosen character sets. Everything runs in your browser — no passwords are sent to or stored on any server.
Can I use this as a LastPass-style password generator?
Yes. It generates passwords using the same principles as LastPass, Firefox, and Microsoft's built-in generators — with no account required and no device limits.
Can I generate a strong MySQL password using this tool?
Yes. Set length to 20-22, enable all character types, and enable Exclude Similar Characters to avoid confusion in connection strings. The result passes MySQL's validate_password requirements.
What makes a password strong and secure?
At least 12-16 characters combining uppercase, lowercase, numbers, and symbols — avoiding dictionary words, keyboard sequences, and personal information. The strength meter checks all of these and shows an estimated crack time.
Can I generate multiple passwords at once?
Yes. Select the quantity (1, 5, 10, or 20 passwords) and click Generate. Copy all at once or download as a TXT file.
Is my password safe when I use this tool?
Yes. Everything runs in your browser. No password is ever transmitted to or stored on a server. We have no access to any password generated or tested here.
About This Tool
This Password Generator was built by the FreeImageTools team — developers and security-conscious professionals who manage multiple accounts, databases, and server credentials daily. We upgraded the original 2-option generator to include 6 character set controls, exclude-similar-characters option, multi-password generation (up to 20 at once), password history for the session, copy-all and download-as-TXT, a strength meter with real crack time estimates, and a show/hide password toggle on the strength checker. All logic runs in the browser — no passwords are ever transmitted. Tested and reviewed most recently in June 2026.