Password Generator
A secure online password generator for creating strong, random passwords with customizable length, character types, and complexity requirements. Perfect for account security, password policies, and cybersecurity best practices with advanced encryption standards and entropy analysis for maximum security.
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What is Password Generator?
The Password Generator creates strong random passwords from character sets you choose. You set the length (4 to 128 characters) and toggle uppercase letters, lowercase letters, numbers, and symbols. The tool uses the browser's crypto.getRandomValues API for cryptographically secure randomness. It also shows password strength. All processing happens in the browser.
How does Password Generator work?
This tool builds a character pool from the selected sets, then picks characters at random using crypto.getRandomValues. The resulting password is displayed with a strength indicator based on length and character diversity.
Key Features
- Customizable length (4-128 characters)
- Toggle uppercase, lowercase, numbers, symbols
- Cryptographically secure generation
- Password strength indicator
- Copy to clipboard
- Generate multiple passwords at once
- Runs in the browser with no uploads
- Exclude ambiguous characters option
Common Use Cases
Creating a new account password
Generate a strong password for a new website or app account.
Updating existing passwords
Create a new password to replace a compromised or weak one.
Generating temporary passwords
Create temporary passwords for guest access or one-time use.
Filling a password manager
Generate unique passwords for each account to store in a password manager.
How to Use This Tool
Set the length
Choose a password length (12+ recommended for security).
Select character types
Toggle uppercase, lowercase, numbers, and symbols.
Generate
Click Generate to create the password.
Copy the password
Click copy and paste it where needed.
Pro Tips
- 1
Use at least 12 characters for strong passwords.
- 2
Include all four character types for maximum entropy.
- 3
Use a unique password for every account.
- 4
Store passwords in a password manager rather than writing them down.
Frequently Asked Questions
How secure are the generated passwords?
The tool uses crypto.getRandomValues, which provides cryptographically secure randomness. A 16-character password with all character types has over 100 bits of entropy.
Is my password sent to a server?
No. All generation happens in your browser. Nothing is transmitted.
What is the maximum length?
128 characters. Most sites require 8-16 characters, but longer passwords are more secure.
Can I exclude confusing characters?
Yes. Enable the 'exclude ambiguous' option to remove characters like 0/O, 1/l/I that look similar.
How is password strength calculated?
The strength indicator considers length, character diversity (uppercase, lowercase, numbers, symbols), and entropy. Longer passwords with all four character types score highest on the strength meter.