Strong Password Generator Online Free

Create highly secure, random passwords locally in your browser. Configure custom lengths, symbols, numbers, and uppercase/lowercase letters to protect your web accounts from brute-force attempts.

✓ Free security tool✓ No signup required✓ Fast results✓ Browser-based utility✓ Mobile friendly
🔒Privacy Note: This tool runs in your browser and does not upload data to BuBird servers.
⚠️Security Alert: To protect your accounts, never share your passwords with anyone. This tool runs entirely in your browser and does not upload, log, or store your passwords.
Security Tools
Strong Password Generator
🔐

Strong Password Generator

Generate strong random passwords with length, symbols, numbers and uppercase options.

Options
18
Uppercase (A–Z)
Lowercase (a–z)
Numbers (0–9)
Symbols (!@#$)
Generated Password

How to Use This Tool

1

Choose Length

Select the password length (16+ characters is recommended for optimal strength).

2

Toggle Password Sets

Select which character sets to include (Uppercase, Lowercase, Numbers, and Symbols).

3

Generate Password

Click the Generate button to produce a new unique password.

4

Copy Securely

Click the Copy button to copy the password directly to your clipboard and paste it into your password manager.

Creating a secure Master Password

You need a secure password to initialize a new email account. Slide the length to 20, check all character set parameters (including symbols and numbers), and generate. Copy the cryptographically secure result and store it safely.

Common Use Cases

Account Safety

Create high-entropy passwords for social media, email, and banking services.

Developer Defaults

Generate secure mock database credentials, secret keys, and application configs.

SysAdmin Setups

Generate random temporary passwords for new system users.

Security Education

Understand how key parameters (length and character variance) boost brute-force resistance.

Related Security Tools

Frequently Asked Questions

Are my generated passwords sent to a server?
No. The password generation process executes entirely in your browser using the cryptographically secure Web Crypto API. Your passwords are never uploaded or stored.
How is the randomness of passwords determined?
The tool uses browser-supported cryptographically secure random number generators (window.crypto.getRandomValues) rather than standard Math.random for maximum unpredictability.
What configuration is best for standard account safety?
A password length of at least 16 characters containing a mix of lowercase, uppercase, numbers, and symbols is recommended for strong defense against modern brute-force attacks.