Random Password Generator - Online Strong Password Generator

A strong password is one with high entropy (randomity), sufficient length, and character complexity. A truly secure random password should meet these criteria:

• At least 12 characters long (16+ recommended)—each additional character exponentially increases brute-force cracking time
• Contains all four character types: uppercase (A-Z), lowercase (a-z), numbers (0-9), and special symbols (!@#$% etc.)
• Fully randomly generated, with no predictable patterns (like keyboard sequences qwer, dictionary words, etc.)

According to NIST estimates, a 12-digit numeric-only password can be cracked in seconds on modern GPUs; while a 16-character mixed-type random password would take billions of years even with global computing power. Generate high-strength random passwords now →

Beyond using a strong password generator, the following security habits are equally critical:

• Use a unique password for each account.Avoid password reuse—one breach can compromise all your accounts (credential stuffing).
• Enable two-factor authentication (2FA).Even if your password is stolen, attackers still need a second verification factor.
• Use a password manager.Tools like Bitwarden or 1Password let you manage all accounts securely with just one master password.
• Rotate core account passwords regularly (email, banking, cloud services), especially after suspected breaches.
• Avoid saving passwords on public devices. Clear browser cache and autofill records after use.

This tool supports customizable length (4-64 chars), character type selection, exclusion of similar characters, and more. Try it now →

This password generator uses a 100% frontend-only operation architecture. All password generation happens directly in your local browser.

Specific security guarantees:

• Randomness source is the browser-native crypto.getRandomValues() API, providing cryptographic-grade true randomness
• Generated passwords are never uploaded to any server, transmitted over the network, or logged
• All data vanishes immediately when the page closes—no persistent storage or cookies
• No registration, login, or any account information required

For highly sensitive scenarios (e.g., generating enterprise admin passwords), we recommend using this tool offline and pasting output directly into its destination to avoid clipboard residue risks.