A strong password is harder for others to guess and harder for automated tools to crack. Length helps. So does variety—uppercase, lowercase, numbers, symbols—and randomness. Dictionary words, names, and patterns like “123456” are weak because attackers try those first. A password strength checker scores what you type: weak, fair, good, or strong. It often suggests improvements: “Add symbols,” “Use a longer password,” “Avoid common words.” You don’t have to follow every suggestion, but the score gives you a reality check before you commit to a new password for an important account.
Use it when you’re choosing a new password. Type it in (or paste it), see the score and the tips, and adjust until you’re comfortable. The checker shouldn’t store or send your password anywhere. If it runs entirely in your browser and doesn’t send keystrokes to a server, your password never leaves your machine. That’s the only way to use a strength checker without risk. Never type your real password into a site that sends it to a server or logs it.
What makes a password stronger? Length—longer is better, so aim for at least 12 characters. Variety—mix letters (upper and lower), numbers, and symbols. Randomness—avoid obvious words, names, and sequences. Uniqueness—don’t reuse the same password on multiple sites. A strength checker can’t enforce all of that, but it can nudge you in the right direction. For storing and generating strong passwords, consider a password manager; the checker is a quick sense-check before you lock in a new one.
Our password strength checker runs in your browser. You type your password; you see the score and suggestions. We don’t see it, store it, or send it anywhere. Use it when you’re creating a new password to see how it holds up—and to get ideas for making it stronger without making it impossible to remember.