Password Generator FAQ
Find answers to common questions about password security, passphrase generation, and how Password Generator keeps your data safe.
How long should a password be?
Security experts recommend a minimum of 12 characters, with 16 or more being ideal for high-value accounts like email and banking. Each additional character exponentially increases the number of possible combinations. A 20-character password is billions of times harder to crack than an 8-character one, even with the same mix of character types.
Why are random passwords better than ones I make up?
Humans are surprisingly predictable when creating passwords. We tend to use dictionary words, birthdays, pet names, and common substitutions like replacing 'a' with '@'. Attackers exploit these patterns with dictionary attacks and rule-based cracking. A truly random password generated by a cryptographic algorithm has no patterns to exploit, making it orders of magnitude harder to crack.
What makes a password strong?
A strong password combines three elements: length (at least 12 characters, ideally 16+), randomness (no dictionary words, names, or predictable patterns), and character diversity (uppercase, lowercase, numbers, and special symbols). The single most important factor is length, because each additional character multiplies the total number of possible combinations an attacker must try.
Is my password safe when I generate it here?
Yes. Every password is generated entirely in your browser using the Web Crypto API (crypto.getRandomValues). No data is ever sent to a server, stored in a database, or logged anywhere. You can verify this by disconnecting from the internet and generating a password — it still works because all computation happens locally on your device.
What is the difference between a passphrase and a password?
A passphrase is a sequence of random words (e.g., 'marble-sunset-bicycle-quantum') rather than a string of random characters. Passphrases are easier to remember and type while still being highly secure due to their length. A four-word passphrase from a large dictionary can have comparable entropy to a 12-character random password, with the advantage of being more human-friendly.
How often should I change my passwords?
The National Institute of Standards and Technology (NIST) no longer recommends routine password changes on a fixed schedule. Frequent changes often lead to weaker passwords because people make small, predictable modifications. Instead, change a password immediately if a service you use reports a data breach, if you suspect unauthorized access, or if you shared it with someone who no longer needs it.
Should I use a password manager?
Absolutely. A password manager stores all your passwords in an encrypted vault protected by one master password. It lets you use strong, unique passwords for every account without memorizing them. Reputable options include Bitwarden (free and open-source), 1Password, and KeePass. Using a password manager is one of the single most impactful steps you can take for your online security.
What is two-factor authentication and why does it matter?
Two-factor authentication (2FA) adds a second verification step beyond your password, such as a code from an authenticator app, an SMS message, or a physical security key. Even if an attacker obtains your password through phishing or a data breach, they cannot access your account without the second factor. Enable 2FA on every account that supports it, especially email and financial services.
What happens if my password is leaked in a data breach?
When a service is breached, attackers obtain a database of usernames and hashed passwords. They run cracking tools against these hashes and then try the recovered credentials on other popular services — a technique called credential stuffing. If you reused that password elsewhere, all those accounts are now vulnerable. This is why every account needs a unique password.
Are special characters really necessary in passwords?
Including special characters (!@#$%^&*) increases the size of the character set an attacker must consider, which strengthens the password. However, length matters more than complexity. A 20-character password using only lowercase letters is stronger than an 8-character password with all character types. If a service restricts certain symbols, compensate by increasing the password length instead.
What are the most common password mistakes?
The biggest mistakes include reusing the same password across multiple accounts, using short passwords (under 10 characters), basing passwords on personal information (names, birthdays, addresses), using common substitutions like 'p@ssw0rd', and storing passwords in plain text files or sticky notes. Avoid all of these by using a random generator and a password manager.
How do hackers crack passwords?
Hackers use several techniques: brute-force attacks that try every possible combination, dictionary attacks that test common words and phrases, rule-based attacks that apply common substitutions (e→3, a→@), credential stuffing using passwords from previous breaches, and phishing to trick you into revealing your password directly. A long, truly random password defeats all of these except phishing, which is why 2FA is also essential.