What is a Password Generator?
A password generator creates random passwords that are hard to guess and resistant to the automated cracking techniques attackers actually use — dictionary attacks (trying real words and common substitutions) and brute-force attacks (trying every possible combination). The strength of a random password comes almost entirely from length and character variety: a longer password drawn from a larger character set has exponentially more possible combinations for an attacker to search through, which is why this tool lets you control both independently rather than just picking a fixed length.
When to use it
Use a generated password any time you're creating a new account, especially for anything tied to money, email recovery, or admin access — these are the accounts attackers target first, because compromising them often unlocks everything else. It's also the right tool when setting a database or service password during deployment, since a memorable password is a weak password by definition, and a password manager (not your memory) should be holding onto the result anyway.
How it works
The generator uses crypto.getRandomValues(), the browser's cryptographically secure random number source, to pick each character — not Math.random(), which is faster but not designed to resist prediction and shouldn't be used for anything security-related. Each character is drawn independently and uniformly from whichever character sets you've enabled (lowercase, uppercase, numbers, symbols), so the strength meter reflects the actual combinatorial size of the password space: more enabled sets and more length both directly increase how long a brute-force attack would take.
Frequently asked questions
How long should a strong password be?
At least 12 characters is a reasonable modern minimum, and 16+ is better if the site allows it. Length matters more than complexity — a 20-character password using only lowercase letters is generally harder to brute-force than an 8-character password mixing every character type.
Is it safe to generate my password in a browser tool like this?
Yes, as long as the tool generates it client-side and never transmits it — which is the case here. The password is created and shown entirely in your browser using the Web Crypto API, and nothing is logged, stored, or sent to any server.
Should I reuse a strong password across multiple sites?
No — even a very strong password should be unique per site. If one service you use suffers a data breach, reused passwords let attackers immediately try that same password on your other accounts (called credential stuffing). Use a password manager to generate and store a different strong password for every account.
Do I need symbols in my password, or are letters and numbers enough?
Symbols add some entropy but the bigger factor is always length. If a site restricts symbols or you want something slightly easier to type, a longer letters-and-numbers password is a reasonable tradeoff — this tool's strength meter will show you the practical difference as you toggle character sets.