Password Strength Tester
How secure is your password? Enter it below to get an instant analysis of its strength, along with actionable feedback and suggestions to help you create more robust and resilient passwords for your online accounts. Your password is analyzed locally in your browser and is never sent to our servers.
Important Security Note: This tool provides an estimated assessment of password strength based on common criteria (length, character types, etc.). It does not check your password against databases of known breached passwords. For maximum security, always use long, complex, and unique passwords for all your important online accounts. Consider using a reputable password generator and a password manager.
How to Use the Password Strength Tester
- Enter Your Password: Type the password you want to test into the input field. As you type, the strength indicator and feedback will update in real-time.
- Toggle Visibility (Optional): Click the eye icon ( / ) next to the input field to show or hide the password as you type it.
- Review Strength Indicator: Observe the colored strength bar and the textual description (e.g., "Very Weak," "Strong," "Very Strong") to get an immediate sense of your password's robustness.
- Check Feedback & Suggestions: Below the strength bar, a list of specific feedback points will appear. These will highlight what your password does well (e.g., "Contains uppercase letters") and where it can be improved (e.g., "Add numbers (0-9)").
The analysis is performed instantly in your browser, and your password is never sent to any server.
What Makes a Password Strong?
A strong password is your first line of defense against unauthorized access to your online accounts. Key characteristics include:
- Length: Longer passwords are significantly harder to crack. Aim for at least 12-16 characters, and even longer for critical accounts.
- Complexity (Character Variety): Using a mix of:
- Uppercase letters (A-Z)
- Lowercase letters (a-z)
- Numbers (0-9)
- Symbols (e.g., !@#$%^&*()_+)
- Unpredictability: Avoid common words, dictionary terms, easily guessable sequences (like "123456" or "qwerty"), and personal information (names, birthdays, pet names).
- Uniqueness: Use a different, strong password for every important online account. If one account is compromised, others remain secure.
This tester evaluates your password based on these common criteria to give you an estimated strength level.
Frequently Asked Questions (FAQ)
Is it safe to type my password into this tool?
Yes, it is safe. This Password Strength Tester operates entirely on your local computer within your web browser (client-side). The password you type is analyzed by JavaScript running on the page and is NEVER transmitted over the internet, sent to our servers, or stored by us in any way. Your password remains private to your browser session on this page.
How is the 'score' for password strength calculated?
The score is an estimation based on a set of rules. Points are awarded for length, the inclusion of different character types (uppercase, lowercase, numbers, symbols), and using a variety of these types. Penalties might be applied for common weaknesses like using all the same characters or very common sequences. The final score is then mapped to a strength label (e.g., Very Weak, Strong).
Does this tool check against lists of breached passwords?
No, this tool does not check your password against databases of passwords known to have been compromised in data breaches (like services such as "Have I Been Pwned"). It only analyzes the structural strength of the password based on its composition.
What if my password manager gives a different strength rating?
Different password strength testers and password managers may use slightly different algorithms and criteria to evaluate strength. This tool provides one common perspective. If your password manager also rates a password as strong, that's a good sign. Always prioritize length and character variety.