Strong Password Generator (Secure & Random)

How to Create Strong Passwords (and Use Them Safely)

A strong password is still one of the most effective ways to protect your accounts. This secure, random password generator runs entirely in your browser using the Web Crypto API, so nothing is uploaded and your results remain private. Whether you’re creating a password for email, cloud storage, banking, developer tools, or e-commerce, the same fundamentals apply: length, unpredictability, and uniqueness.

What makes a password “strong”?

• Length first: Aim for 12–16+ characters for everyday accounts; go 20–32+ for admin roles or high-value targets.
• High entropy: Mixing uppercase, lowercase, numbers, and symbols increases the size of the character pool, making brute-force guessing far harder.
• True randomness: Avoid patterns (dates, names, keyboard walks). This tool uses cryptographically secure randomness rather than predictable math or time-based seeds.
• Uniqueness per site: Re-used passwords turn one breach into many. Generating a fresh one for each login stops cascade compromises.

Passwords vs. Passphrases

A passphrase strings together multiple unrelated words (e.g., “lamp taxi meadow orbit”). Passphrases can be easier to type and remember while still offering strong security if they’re long and truly random. Some sites restrict spaces or symbols; if so, use this generator with a longer length and all character sets enabled to compensate.

Practical tips for UK/EU users

• Use a password manager: Store and auto-fill unique passwords across devices. It reduces reuse and makes long passwords painless.
• Enable multi-factor authentication (MFA): Even a perfect password benefits from a second factor (app prompt, FIDO2 key, or TOTP).
• Mind site rules: Some services prohibit certain symbols or enforce rotation. If you encounter limits, increase length and rely on randomness.
• Travelling or on public Wi-Fi? Avoid logging into sensitive services on shared machines. If you must, use a VPN and sign out fully.
• Phishing awareness: Strong passwords can still be stolen if you type them into fake pages. Check the URL, use browser password-manager warnings, and prefer passkeys/MFA where possible.

About this generator

This strong password maker uses window.crypto.getRandomValues to select characters uniformly from your chosen sets (A–Z, a–z, 0–9, and symbols). Advanced options let you exclude look-alike characters (o/O/0, l/1/I), avoid duplicates, or require a prefix/word insert for compatibility with strict login policies. The on-screen entropy meter estimates the strength (in bits) to help you pick the right balance of length and complexity.

Do and Don’t

• Do: Use a different password for every website and turn on MFA.
• Do: Prefer longer passwords over overly complex but short ones.
• Don’t: Reuse passwords, store them in plaintext documents, or share them over email/DMs.
• Don’t: Use personal data (names, pets, birthdays) or predictable patterns.

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