What is a Password Generator?
A password generator is a tool that creates unpredictable random passwords using cryptographically secure random numbers. When creating passwords manually, unconscious patterns tend to emerge, but this tool generates hack-resistant passwords through completely random combinations.
It uses the browser's Web Crypto API to generate passwords securely on your local device without going through any server. You can freely customize combinations of uppercase, lowercase, numbers, and special characters along with length, and check password strength in real-time.
Key Features
Cryptographically Secure
Uses Web Crypto API (crypto.getRandomValues) to generate truly unpredictable random passwords.
Strength Indicator
Calculates password entropy and displays strength in real-time as Weak, Fair, Strong, or Very Strong.
Flexible Character Options
Freely choose from uppercase (A-Z), lowercase (a-z), numbers (0-9), and symbols (!@#$%...) in any combination.
Bulk Generation & History
Generate up to 10 passwords at once and review your generation history within the current session.
How to Use
- Set Length — Use the slider to set password length between 8 and 128 characters. 16 or more is recommended.
- Select Character Options — Toggle which character types to include: uppercase, lowercase, numbers, and symbols.
- Click Generate — Press the 'Generate Password' button to instantly create a password matching your settings.
- Copy and Use — Click the copy button next to the password to copy it to your clipboard. Paste it into the service you need.
Use Cases
Website Registration
Create unique, strong passwords when signing up for new websites or apps to keep your accounts secure.
Wi-Fi Password Setup
Set a strong random password for your home or office Wi-Fi to prevent unauthorized access.
Development & Testing
Quickly generate random strings for API keys, secret tokens, test passwords, and other development needs.
Regular Password Changes
Easily generate new strong passwords when regularly updating passwords according to security policies.
FAQ
Is this password generator secure?
Yes, this password generator uses the browser's Web Crypto API (crypto.getRandomValues) to generate cryptographically secure random numbers. All processing occurs in your browser and nothing is sent to any server.
What makes a password secure?
A secure password is at least 12 characters long and includes uppercase letters, lowercase letters, numbers, and special characters. Avoid dictionary words and personal information (birthdays, names), and use a unique password for each service.
What is the ideal password length?
A minimum of 12 characters is recommended, and 16 or more is even better. Longer passwords exponentially increase resistance to brute force attacks. Use 20+ characters for critical accounts.
Where are the generated passwords stored?
Generated passwords are only displayed in the current browser session history and disappear when you close the page. Nothing is stored on servers or transmitted externally. We recommend using a password manager for secure password storage.
Can I generate multiple passwords at once?
Yes, you can generate up to 10 passwords at once. Set the desired count and click the generate button to create multiple passwords with the same options (length, character types) simultaneously.
Privacy Notice
This password generator performs all processing in your browser. Generated passwords are never sent to any server, and the history is completely cleared when you close the page. No data is stored externally, so you can use it with complete confidence.