Password Generator
Generate strong, secure random passwords and passphrases with customizable length, character sets, and strength analysis.
Passphrases are a method to ensure length while remaining easy to remember. Increasing the number of words makes them more secure.
All generation is performed using the browser's built-in cryptographically secure random number generator (crypto.getRandomValues). Generated passwords are not sent to the server or stored in your browser โ they disappear when you refresh the page. Only settings like length and character types are saved.
Cracking time is a theoretical estimate, assuming an attacker knows the character composition and length. No matter how strong a password is, reusing it across multiple sites means that if one site is breached, your other accounts may also be compromised.
What is the Password Generator?
Using weak or repeated passwords is a major security risk. This password generator creates strong, unpredictable passwords to help keep your accounts safe. Choose between two modes: '๐ฒ Random Characters' lets you customize length (up to 128), include uppercase, lowercase, digits, and symbols, and even exclude similar characters like 'l' and '1'. '๐ฌ Passphrase' mode builds a long, memorable password from a dictionary of words. Every password's strength is instantly analyzed, showing its entropy and estimated cracking time. Crucially, all generation happens in your browser; your passwords are never sent to a server.
How to use
- Select a generation method: '๐ฒ Random Characters' or '๐ฌ Passphrase'.
- For random characters, adjust the 'Length' slider and check the character types to include, such as 'Uppercase (A-Z)' and 'Symbols (!@#$โฆ)'.
- For a passphrase, set the 'Number of words', 'Word dictionary', and the 'Separator' to use between them.
- Set how many passwords to 'Generate' at once, then click the 'Generate New' button.
- Your new password appears along with a strength bar, entropy bits, and estimated cracking times.
- Click the 'Copy' button next to any password in the list to use it immediately.
Frequently asked questions
Are the generated passwords saved or sent anywhere?
No. Generation happens entirely in your browser. Passwords are never sent to our server or stored. They disappear when you refresh the page, ensuring your privacy.
How long should my password be?
For important accounts, aim for 16+ characters with a mix of all character types. If unsure, click 'Suggested Settings' for a secure 20-character configuration.
Is the passphrase method secure?
Yes, it can be very strong. A passphrase uses memorable words to achieve greater length, which makes it highly resistant to brute-force attacks. It's ideal for master passwords.
What do entropy and cracking time mean?
Entropy (in bits) measures a password's randomness; higher is better. Cracking time is a theoretical estimate of how long it would take to guess it. They are useful indicators of security.