Secure Password Generator
Generate strong, random passwords with customizable options. All passwords are generated locally in your browser for maximum security.
Why Use a Password Generator?
Using strong, unique passwords for each account is one of the most important steps you can take to protect your online security. Human-created passwords tend to be predictable - we use dictionary words, personal information, and common patterns that attackers can easily guess.
A password generator creates truly random passwords that are extremely difficult to crack through brute force or dictionary attacks. Combined with a password manager, generated passwords provide robust protection for your accounts.
What Makes a Strong Password?
- Length: Longer passwords are exponentially harder to crack. Aim for 16+ characters.
- Complexity: Mix uppercase, lowercase, numbers, and symbols to increase possible combinations.
- Randomness: Avoid patterns, dictionary words, or personal information.
- Uniqueness: Never reuse passwords across different accounts.
How Password Entropy Works
Password strength is measured in bits of entropy. Higher entropy means more possible combinations an attacker would need to try:
- <28 bits: Very weak - can be cracked in seconds
- 28-35 bits: Weak - vulnerable to dedicated attacks
- 36-59 bits: Fair - provides basic protection
- 60-127 bits: Strong - resistant to most attacks
- 128+ bits: Very strong - practically uncrackable
A 16-character password using uppercase, lowercase, numbers, and symbols has approximately 105 bits of entropy - considered very strong.
Is This Tool Secure?
Yes. This password generator runs entirely in your browser using the Web Crypto API, which provides cryptographically secure random number generation. Your passwords are:
- Never transmitted: Generated locally, never sent to any server
- Not stored: No passwords are saved or logged
- Cryptographically secure: Uses browser's native crypto.getRandomValues()
Frequently Asked Questions
How long should my password be?
For most accounts, 16 characters is recommended. For high-security accounts (banking, email, password manager), consider 20+ characters. The longer the better.
Should I include symbols?
Yes, when possible. Symbols significantly increase password strength. However, some websites restrict which symbols can be used, so you may need to adjust accordingly.
What are ambiguous characters?
Ambiguous characters like lowercase L (l), uppercase I (I), number 1, uppercase O (O), and number 0 can look similar in certain fonts, making passwords hard to read or type correctly. Excluding them can help if you need to manually enter passwords.
How do I remember these passwords?
Use a password manager like 1Password, Bitwarden, or KeePass. These tools securely store all your passwords, so you only need to remember one master password.
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