What is Password Generator?
Password Generator is a security-focused online tool that uses the browser's cryptographically secure random number generator (crypto.getRandomValues) to create strong random passwords. Customize length (4-128 characters), character types (uppercase, lowercase, numbers, symbols), and exclude ambiguous characters (0/O, 1/l/I). Real-time generation with one-click copy. Batch generate up to 100 passwords at once for creating multiple account credentials. All generation runs locally in your browser — passwords are never transmitted to any server, ensuring only you know the generated passwords. Perfect for website accounts, database passwords, API keys, WiFi passwords, and more. Generated passwords have sufficient entropy to resist brute-force and dictionary attacks.
Use Cases
- ◆Create strong passwords for website accounts (email, social media, online banking)
- ◆Generate database access passwords (MySQL, PostgreSQL, MongoDB)
- ◆Create API keys and access tokens
- ◆Generate WiFi network passwords
- ◆Batch generate test account passwords (development environment)
- ◆Create encryption passwords for compressed files
How to Use
- 1Set password length: drag slider or enter number (4-128 characters). Recommend at least 12 characters for website accounts, 16+ for important accounts (email, banking)
- 2Select character types: check boxes for characters to include (uppercase A-Z, lowercase a-z, numbers 0-9, symbols !@#$%^&*). Recommend at least 3 types
- 3Optional: check "Exclude ambiguous characters" to remove 0/O, 1/l/I and other easily confused characters, reducing input errors
- 4Click "Generate Password" button. The tool instantly generates a random password and displays it in the result box. Password highlights different character types in real-time
- 5Click "Copy" to copy password to clipboard, or "Refresh" to generate a new password
- 6For batch generation, set quantity (2-100), click "Batch Generate". The tool generates multiple passwords at once in a list. Copy individually or copy all
Features
- ✓Cryptographically secure random (crypto.getRandomValues)
- ✓Custom length (4-128 characters)
- ✓Multiple character types (uppercase/lowercase/numbers/symbols)
- ✓Exclude ambiguous characters (0/O, 1/l/I)
- ✓Batch generation (up to 100)
- ✓Real-time preview and copy
- ✓Password strength indicator
- ✓Browser-based generation (no password upload)
FAQ
What is a password generator?
A password generator is an online security tool that uses the browser's cryptographically secure random number generator to create strong random passwords. Input is length and character type settings, output is random password strings. Suitable for creating strong passwords for website accounts, databases, API keys, and more.
Are the generated passwords secure?
Very secure. The tool uses the browser's crypto.getRandomValues() API, a cryptographically secure pseudo-random number generator (CSPRNG). Generated passwords have sufficient entropy to resist brute-force and dictionary attacks. Much more secure than human-created passwords (birthdays, names).
Are passwords uploaded to a server?
No. All password generation runs locally in your browser using native JavaScript APIs. Generated passwords are never transmitted to any server — only you can see them. Passwords disappear when you close the page.
How long should my password be?
Recommend at least 12 characters. 12-16 characters for regular website accounts, 16-24 characters for important accounts (email, banking, admin accounts). Each additional character increases cracking difficulty by ~10x (when using all character types).
What are ambiguous characters? Why exclude them?
Ambiguous characters look similar and are easily confused, like digit 0 and uppercase O, digit 1 and lowercase l and uppercase I. Excluding them reduces input errors when manually typing passwords, especially on small phone screens.
How should I securely save generated passwords?
Use a professional password manager (1Password, Bitwarden, LastPass). Password managers encrypt all stored passwords with a master password — you only need to remember one master password. Do not save passwords in plain text files or notes.
Can I batch generate multiple passwords?
Yes. Set quantity (2-100), click "Batch Generate". The tool generates multiple passwords at once in a list. Copy each individually or copy all with one click.
Is this tool free?
Completely free. No signup, no login, no usage limits, no feature restrictions. Just open the page and use all functions.