What is a Password Generator?
Strong passwords feel tedious until you've had an account taken over; this generator makes long, random strings trivial to produce on demand.
Each password is built from the character classes you pick (uppercase, lowercase, digits, symbols) using the browser's cryptographic RNG, so the output resists brute-force attacks, dictionary attacks, and pattern-based guesses in roughly that order.
You can tune length, batch size, and excluded characters — useful when a system bans certain symbols or you just want to drop visually ambiguous characters likel, 1, I, O, and 0.
How to Use the Password Generator
- Set the number of passwords you want to generate (from 1 to 100)
- Adjust the password length using the slider (4-64 characters)
- Select character types to include (uppercase, lowercase, numbers, symbols)
- Optionally enable "Exclude Similar Characters" to avoid confusion
- Include or exclude specific characters if needed
- Click the "Regenerate" button to create new passwords
- Copy results individually or all at once to your clipboard
- Download results as a text file if needed
- Toggle the "Show Passwords" option to hide sensitive information
Examples
16-character strong password for a banking login
All four character classes enabled (A-Z, a-z, 0-9, symbols) and ambiguous characters excluded. Every character is drawn from crypto.getRandomValues, giving roughly 104 bits of entropy.
Input
length: 16
uppercase: true
lowercase: true
digits: true
symbols: true
exclude similar: true
6-digit PIN for a device lock screen
Numbers only, short length. Fine for throwaway account recovery codes but too short for anything facing the internet.
Input
length: 6
uppercase: false
lowercase: false
digits: true
symbols: false
Batch of 5 service credentials for a test environment
Bulk generation creates a file-ready list you can paste into a secret manager. Each row is drawn independently from the CSPRNG.
Input
length: 20
count: 5
uppercase: true
lowercase: true
digits: true
symbols: true
Output
Fm7!q3Nc$wR8Xz2Lk&Yt
B4#hJ9dK@pV2xG6aN!Uq
P8zL#mK2!fH7xT3cV@W9
R6$bN8jX!aW2kM4pQ#Z7
C3!xY9nP4#mD7vT8kH$J
Understanding Password Strength
Very Weak
Short passwords with limited character types. These can be cracked quickly and should be avoided for all accounts. Typically includes passwords shorter than 8 characters or those using only numbers or letters.
Weak
Passwords that have minimal complexity or are too short. These provide only basic protection and can be vulnerable to brute force attacks. Often includes passwords with 8-10 characters using only one or two character types.
Fair
Passwords with moderate length and some complexity. These offer adequate protection for low-risk accounts. Typically includes passwords with 10-12 characters using a mix of character types, but may lack sufficient randomness.
Good
Passwords with good length and complexity using multiple character types. Suitable for most online accounts including email and social media. Usually contains 12-16 characters with a good mix of uppercase, lowercase, numbers, and possibly symbols.
Strong
Long passwords with high complexity using all character types. These provide maximum security and are recommended for sensitive accounts like banking, password managers, and email. Typically includes 16+ characters with a diverse mix of character types and high entropy.
Key Features
Length is adjustable from 4 to 64 characters, you can mix and match character classes (A-Z, a-z, 0-9, symbols), and bulk generation goes up to 100 passwords at a time. Random bytes come from the Web Crypto API, everything happens in your browser, and nothing is logged on a server. A strength indicator and an optional visibility toggle keep things honest while you copy results to the clipboard or download them as a file.
Common Use Cases
- Online account passwords
- Wi-Fi and router passwords
- Password manager master passwords
- API keys and security tokens
Export
- Copy one password or all at once
- Download the batch as a text file
- Toggle grid or list view
Password Generator Use Cases
- Online Accounts: Create unique, strong passwords for every website and service you use
- Security Professionals: Generate secure credentials for systems, networks, and applications
- Developers: Create test credentials and secure API keys for applications
- IT Administrators: Set up secure initial passwords for user accounts and systems
- Password Managers: Generate a strong master password that protects all your other credentials
How Password Generation Works
This tool uses the browser's cryptographically secure random number generator (CSPRNG) to create high-entropy passwords. For each character position, a random number is generated and mapped to a character from the selected character sets (uppercase, lowercase, numbers, symbols).
The strength indicator analyzes various aspects of your password, including length, character diversity, and complexity. This analysis provides a visual indication of how resistant your password would be against common cracking methods like brute force attacks, dictionary attacks, and pattern-based guessing techniques.
Remember that even the strongest password can't protect you if you're tricked into revealing it or if you use it on an insecure website. Always ensure you're on legitimate websites before entering passwords, especially for financial or sensitive accounts.
Frequently Asked Questions
Q: How secure are the generated passwords?
The passwords are generated using the Web Crypto API, which provides cryptographically secure random values. Combined with configurable length and character set options, the generated passwords offer excellent security for any use case.
Q: Is password entropy calculated?
Yes, the tool calculates and displays the entropy (in bits) for each generated password. Entropy measures the randomness of a password — higher entropy means more possible combinations and stronger resistance to brute-force attacks.
Q: Are the generated passwords stored or transmitted anywhere?
No, all password generation happens entirely in your browser. No passwords are sent to any server, stored in cookies, or logged anywhere. Your generated passwords remain completely private on your device.
Q: What is a good password length for security?
A minimum of 12 characters is recommended for strong security, with 16 or more characters being ideal. Longer passwords with mixed character types (uppercase, lowercase, numbers, symbols) provide exponentially more resistance to cracking attempts.
Q: What does "Exclude Similar Characters" do?
This option removes characters that look alike, such as "l" (lowercase L), "1" (one), "I" (uppercase i), "O" (uppercase o), and "0" (zero). It prevents confusion when manually reading or typing passwords.