How to Generate Strong, Secure Passwords (And Remember Them)

Why Password Strength Matters in 2026

Data breaches have exposed over 15 billion stolen credentials in publicly known incidents. Password stuffing — where attackers automatically try stolen username/password pairs across thousands of websites — is one of the most common and successful attack methods used by cybercriminals today.

The core problem is simple: humans are predictably bad at creating passwords. We reuse passwords across sites, we use personal information (birthdays, pet names, sports teams), we rely on common substitutions (replacing "a" with "@"), and we choose patterns that are trivial for modern cracking tools to guess.

A modern GPU can try billions of password guesses per second. Against a common dictionary of words and known patterns, an "average" human-chosen password can be cracked in seconds to minutes. A truly random, high-entropy password, however, would take longer than the age of the universe to crack by brute force.

What Makes a Password Strong?

Password strength comes from entropy — a measure of how unpredictable the password is. Entropy is determined by two factors:

1. Length: Every additional character multiplies the number of possible combinations exponentially. A 12-character password from a 72-character set has 72^12 ≈ 19 quadrillion possible combinations. A 20-character password from the same set has 72^20 ≈ 4 × 10^37 combinations.

2. Character variety: Using uppercase letters, lowercase letters, numbers, and symbols greatly increases the size of the character set, multiplying the search space attackers must cover.

The current industry standard recommendation (NIST SP 800-63B) is:

• Minimum 12 characters for human-generated passwords
• 16+ characters recommended for high-security accounts
• Use a password manager and generate random passwords for every account

How Cryptographically Secure Password Generation Works

Imgira's password generator uses the Web Crypto API — specifically window.crypto.getRandomValues() — to generate passwords. This is fundamentally different from Math.random(), which is a pseudo-random number generator suitable for simulations but not cryptography.

window.crypto.getRandomValues() draws from your operating system's entropy pool, seeded from physical events like CPU thermal noise, disk I/O timing, and mouse movement. This produces true randomness suitable for cryptographic applications.

Importantly, this all happens entirely within your browser. The generated password is never transmitted to any server — not even to Imgira's servers. The password exists only in your browser's memory until you copy it or close the tab.

Step-by-Step: Generate a Secure Password with Imgira

1. Open the Password Generator at imgira.site/password-generator.

2. Set the password length. Use the slider to set your desired password length. For most accounts, 16 characters provides excellent security. For highly sensitive accounts (banking, email, password manager master password), use 20+ characters.

3. Select character sets. Choose which character types to include:

• Uppercase letters (A-Z): Always enable
• Lowercase letters (a-z): Always enable
• Numbers (0-9): Always enable
• Special symbols (!@#$%^&*): Enable for most accounts; some services do not accept all symbols

Note: Enabling more character types dramatically increases password strength. A 16-character password using all four types is far stronger than a 20-character password using only letters.

4. Set the number of passwords. Generate multiple options at once so you can choose the one that feels most convenient to manually type (if needed) or simply use the first one.

5. Copy and save the password immediately. Click the copy button next to your chosen password to copy it to the clipboard. Immediately paste it into a password manager — do not try to memorize it.

Password Management Best Practices

Use a password manager. The single most impactful security improvement most people can make is adopting a password manager. Tools like Bitwarden (free, open source), 1Password, Dashlane, or your browser's built-in password manager can store hundreds of unique, randomly generated passwords securely. You only need to memorize one strong master password.

Never reuse passwords. Every account should have a unique password. This limits the damage from any single data breach — if one service is compromised, attackers cannot use those credentials anywhere else.

Enable two-factor authentication (2FA). Even a perfectly strong password can be stolen through phishing or malware. Two-factor authentication adds a second verification step (usually a time-based code from an authenticator app) that attackers cannot bypass even with your password.

Update passwords after data breaches. Use Have I Been Pwned (haveibeenpwned.com) to check if your email address appears in known data breaches. If it does, change the passwords for any compromised services immediately.

Be skeptical of security questions. "Your first pet's name" or "Your mother's maiden name" are not secret — they are often findable through social media or public records. If a site requires security questions, treat them like a secondary password: use random strings generated by your password manager, not real personal information.

Common Password Myths Debunked

Myth: "I'll remember a complex pattern like P@ssw0rd1."

Reality: Attackers know about common substitutions and patterns. "P@ssw0rd1" is in most cracking dictionaries. True security comes from randomness, not complexity through substitution.

Myth: "A longer password is always better than a complex short one."

Reality: Both length and character variety matter. A 20-character password using only lowercase letters is weaker than a 16-character password using all character types, because the lowercase-only password has far fewer possible combinations.

Myth: "My account isn't important enough to be targeted."

Reality: Most attacks are automated and target everyone. Attackers do not manually select victims — they run scripts against every discovered email address. Your "unimportant" social media account can be used to launch phishing attacks against your contacts or accessed for personal information.

Myth: "Changing passwords regularly makes them more secure."

Reality: Frequent mandatory password changes often result in users choosing weaker, predictable variations (Password1, Password2, etc.). Modern security guidance recommends changing passwords only when you suspect compromise, not on a mandatory schedule.

What to Do If Your Password Is Compromised

If you suspect a password has been stolen:

1. Change it immediately on the affected service.

2. Change it on every other service where you used the same password.

3. Check your email for suspicious login notifications from other services.

4. Enable 2FA on your most important accounts if you have not already.

5. Scan your device for malware that may be logging keystrokes.

Password security is an ongoing practice, not a one-time task. Generating strong, unique passwords with a trusted tool like Imgira, combined with a good password manager, puts you well ahead of the vast majority of users and dramatically reduces your risk of account compromise.