Reusing the same password, or a slightly tweaked version of it, across multiple accounts is one of the easiest ways to get compromised: once one site leaks, attackers try that password everywhere else. A unique, random password for every account closes that door.
The problem is that truly random passwords are hard to invent yourself — and easy to generate with the right tool.
Strength comes down to length and unpredictability. A longer password with a mix of character types is exponentially harder to crack than a short one, even with clever substitutions like "@" for "a".
Longer passwords are exponentially harder to crack.
Uppercase, lowercase, numbers and symbols together.
A unique password for every account.
A second layer of security if a password leaks.
Cryptographically secure, generated entirely in your browser. Nothing is stored or transmitted.
Generate a Password →If you're setting up several new accounts, or migrating a team onto a password manager, the bulk generator can produce 5, 10 or 20 passwords with identical settings in one click, then copy them all at once.
A fully random password is the most secure option, since it has no pattern to guess. A pronounceable password trades a little randomness for something easier to read aloud or type manually — useful for a device passcode you'll enter often, though a password manager makes this trade-off unnecessary for most accounts.
No. Every password is generated locally in your browser using a cryptographically secure random number generator. Nothing is logged, stored, or transmitted to any server.
Password strength is not about looking complicated. It is about how many possibilities an attacker has to work through, and that number comes from two things only: how many different characters you draw from, and how many characters long the result is. Written out, the size of the search space is the alphabet size raised to the power of the length.
The consequence surprises people. Adding one character to a password multiplies the work by the size of the alphabet. Swapping an "a" for an "@" merely moves one entry within it. That is why P@ssw0rd! is weak — it is a dictionary word with predictable substitutions that every cracking tool tries first — while a longer, genuinely random string is strong even though it looks less clever.
| Composition | Alphabet | Length | Approximate entropy |
|---|---|---|---|
| Lowercase only | 26 | 8 | ~38 bits |
| Upper, lower, digits | 62 | 8 | ~48 bits |
| Upper, lower, digits, symbols | 94 | 12 | ~79 bits |
| Upper, lower, digits, symbols | 94 | 16 | ~105 bits |
| Four random common words | ~7,776 per word | 4 words | ~52 bits |
Anything at or above roughly 80 bits is beyond brute force for the foreseeable future. Below about 50 bits is uncomfortable for anything valuable.
A generator is only as good as its source of randomness. Browsers expose a cryptographically secure generator, and that is what a password tool should use — not Math.random(), which is fast, predictable in principle, and never intended for security. The distinction is invisible in the output; both produce strings that look scrambled. It matters enormously in whether that scrambling can be reproduced.
Human-chosen "random" is the weakest source of all. People favour certain letters, alternate hand positions on the keyboard, put the capital first and the digit last, and gravitate to the same handful of symbols. Cracking tools are built around exactly these habits.
For the handful of passwords you must actually memorise — your device login, your password manager's master password — a passphrase of four or five randomly chosen words beats a short scrambled string on both strength and usability. The critical word is randomly. Words you picked because they mean something to you carry very little entropy; words drawn at random from a large list carry a great deal.
The most common way accounts fall is not that someone cracked a strong password. It is credential stuffing: a breach somewhere leaks an email and password pair, and attackers replay that pair automatically against hundreds of other services. If the password was unique to the breached site, the damage stops there. If it was reused, one careless forum leaks your email account.
This is also why "change your password every 90 days" has fallen out of favour with security guidance. Forced rotation pushes people toward predictable increments — Summer2024, Summer2025 — which is worse than a strong password left alone. Change a password when there is a reason: a breach notice, a shared device, a suspicion.
Some sites still cap passwords at 16 characters, or silently truncate longer ones, or ban symbols. A cap that low is usually a sign the site is doing something questionable with storage. Where you meet one, use the full length allowed with the widest character set permitted, and make certain that password is used nowhere else. Where a site offers two-factor authentication, turn it on — it defends the account even if the password is compromised entirely.
The generator here runs entirely in your browser using the platform's cryptographic randomness. Nothing is sent to a server, nothing is logged, and no history is kept — which is the only sensible arrangement, because a password that has travelled across the internet to be created is no longer solely yours. You can verify the claim rather than accept it: open developer tools, watch the Network tab while generating, and see that nothing leaves. Or disconnect from the internet after the page has loaded and generate anyway.
Sixteen random characters from a mixed alphabet gives around 105 bits of entropy, which is far beyond brute force. Twelve is a reasonable floor for ordinary accounts. Length matters more than complexity - each extra character multiplies the attacker's work by the size of the character set.
They help, but not as much as length. Going from twelve to sixteen characters adds far more strength than adding a symbol to a short password. Use symbols where they are allowed, and prioritise length when a site restricts them.
Four or five words chosen at random from a large list lands in a similar range to a strong random string, and is far easier to remember. The catch is that the words must genuinely be random - words you picked because they mean something to you carry very little entropy.
Only when there is a reason: a breach notice, a shared or lost device, or a suspicion something is wrong. Scheduled rotation tends to push people toward predictable increments, which is weaker than a strong password left in place.
Attackers take email and password pairs from one breach and replay them automatically against hundreds of other services. A unique password confines the damage to the site that leaked. A reused one turns a trivial forum breach into a compromised email account.
Use the maximum length and widest character set it permits, make sure that password is used nowhere else, and enable two-factor authentication if it is offered. A low cap often signals questionable storage practices, so treat the account as higher risk.
No. It is created in your browser using the platform's cryptographic randomness, and nothing is transmitted or logged. Watch the Network tab in developer tools while generating, or disconnect from the internet after the page loads - it still works.