Password Generator
Generate secure random passwords
Generated Password
Click "Generate Password" to create a new password
Password Options
Password Length16
464
Advanced Options
Generate Quantity
Batch Generate
Generated passwords will appear here
Features
Professional secure password generation tool
True Random Generation
Uses Web Crypto API to generate true random numbers, ensuring passwords are unpredictable
Flexible Configuration
Customize length and character types to meet various password requirements
Batch Generation
Generate multiple passwords at once for convenient batch setup
Strength Detection
Real-time password strength assessment to help choose secure passwords
Exclude Similar Characters
Can exclude easily confused characters like 0/O, l/1 to avoid input errors
Local Generation
Completely generated in browser, passwords are never sent to any server
Frequently Asked Questions
Common questions about password security
How long should a password be to be secure?
Recommend at least 12 characters, 16 or longer is better. Each additional character exponentially increases cracking difficulty. An 8-digit pure number password can be cracked in seconds, while a 16-character mixed password takes centuries.
Are generated passwords really random?
Yes. This tool uses the browser's Web Crypto API (crypto.getRandomValues), which is a cryptographically secure pseudo-random number generator (CSPRNG). The generated random numbers are unpredictable and integrated with the operating system's hardware random number generator, suitable for secure password generation.
Why exclude similar characters?
Some characters are visually similar, such as 0 (zero) and O (letter O), l (lowercase L) and 1 (number 1), I (uppercase i), etc. When passwords need to be entered manually (like WiFi passwords), excluding these characters can avoid input errors.
How to securely store generated passwords?
It is recommended to use a password manager (such as 1Password, Bitwarden, KeePass) to store passwords. Do not save passwords in plain text files, notes, or emails. If you must record them, use encrypted storage. Avoid using the same password on multiple websites.
How is password strength evaluated?
Strength assessment is based on multiple factors: password length, whether it contains uppercase letters, lowercase letters, numbers, special symbols. These factors are combined to calculate a score, divided into four levels: weak, medium, strong, very strong. Length is the most important factor, followed by character type diversity.