🔐 Security

Random Password Generator

Generate strong, random passwords with your choice of length and character types. Runs entirely in your browser — nothing is stored.

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Tips for a strong password

  • Use 16+ characters — length is the single biggest factor in password strength.
  • Mix uppercase, lowercase, numbers and symbols to increase the character pool.
  • Never reuse passwords across different sites.
  • Store passwords in a password manager (e.g. Bitwarden, 1Password) rather than writing them down.
  • This generator uses the browser's cryptographically secure crypto.getRandomValues() API.

Why Use a Password Generator?

The most common passwords in the world are still "123456" and "password" — used by hundreds of millions of accounts. Human-created passwords tend to follow predictable patterns: names, dates, favourite teams, keyboard walks. Attackers know this and design their cracking tools around it. A truly random password generator eliminates all human pattern bias by using a cryptographically secure algorithm that no attacker can predict. The result is a password that is both strong and genuinely random — something a human brain cannot reliably produce on its own.

Key Features

  • Cryptographically secure: Uses the browser's crypto.getRandomValues() API — the same standard used by password managers
  • Adjustable length: Slider from 6 to 64 characters — set the length that matches each site's requirements
  • Character type controls: Toggle uppercase, lowercase, numbers, and symbols independently
  • Exclude ambiguous characters: Option to avoid 0, O, l, I, 1 that can be misread in certain fonts
  • Entropy display: Shows bits of entropy and a strength rating (Weak / Fair / Strong / Very Strong)
  • Bulk generation: Generate up to 20 unique passwords at once for batch account creation

Real-Life Use Cases

  • Creating a new password for a banking, email, or social media account where security is critical
  • Generating a strong API key or service account password for a web application or server
  • Producing bulk passwords for a team of new employees being onboarded to company systems
  • Replacing reused or weak passwords across multiple accounts during a security audit
  • Creating a temporary password to share with a contractor before revoking access

Who Can Use This Tool

Everyone who uses online accounts — which is essentially everyone. It is especially valuable for IT administrators managing user accounts, security-conscious individuals performing regular password rotations, developers generating secrets and keys, and anyone setting up new accounts who wants to start with a strong password rather than something they'll remember easily (and an attacker might guess).

Tips & Best Practices

  • Use 16+ characters for general accounts and 20+ for email and banking — length is the single biggest factor in security
  • Enable symbols for maximum entropy — even adding symbols to a 12-character password makes it significantly harder to crack
  • Never use the same password on two different sites — a breach on one site immediately compromises all others with the same password
  • Save generated passwords immediately in a password manager (Bitwarden is free and open-source) — do not write them down
  • Enable two-factor authentication (2FA) on top of a strong password for the most important accounts

Frequently Asked Questions

Is this password generator secure?
Yes. This tool uses the browser's built-in crypto.getRandomValues() API, which is a cryptographically secure pseudo-random number generator (CSPRNG). This is the same standard used by password managers. Generated passwords are never sent to any server.
What is a good password length?
Security experts recommend at least 16 characters for general accounts and 20+ for sensitive ones like banking or email. Length is the single biggest factor in password strength — each extra character multiplies the number of possible combinations exponentially.
Should I include symbols in my password?
Yes, if the site allows it. Adding symbols expands the character pool from 62 (letters + digits) to ~94, dramatically increasing entropy. A 16-character password with symbols has over 10× the combinations of one without symbols at the same length.
What does "entropy" mean for a password?
Entropy (measured in bits) represents how unpredictable a password is. The formula is: bits = length × log₂(pool size). A password with 80+ bits of entropy is considered very strong — it would take billions of years to crack by brute force even with modern hardware.
Should I store generated passwords somewhere?
Never write passwords down or store them in plain text files. Use a reputable password manager such as Bitwarden (free, open-source), 1Password, or your browser's built-in password manager to store and autofill them securely.
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