Password Generator

How this password generator works

Nonkera generates passwords using the Web Crypto API's cryptographically secure random number generator (CSPRNG) — the same class of randomness source used for encryption keys, not the predictable Math.random() function many simpler generators rely on. You choose a length and which character sets to include (uppercase letters, lowercase letters, numbers, and symbols), and the generator assembles a password by drawing uniformly at random from that combined character pool.

Because generation happens entirely in your browser, the password is never sent over the network, logged on a server, or stored anywhere — it exists only on your screen until you copy it and close the tab.

What makes a password strong

Password strength comes down to entropy: how many possible combinations an attacker would have to try before guessing correctly. Length matters more than complexity — a 16-character password drawn from a large character set is dramatically harder to brute-force than an 8-character one, even if the shorter one mixes in symbols. As a rough guide, aim for at least 12–16 characters and include a mix of character types whenever the site or app you're signing up for allows it.

The biggest real-world threat to passwords isn't brute-force guessing, though — it's reuse. If one site you use is breached and your password leaks, attackers immediately try that same password on other services (a technique called credential stuffing). A unique, randomly generated password per account removes that risk entirely, since a breach on one site tells an attacker nothing useful about your password anywhere else.

Common use cases

People use this generator when creating a new account and want something stronger than a password they can remember, when a company policy requires periodic password rotation, or when setting up a new device and want a strong Wi-Fi or router admin password. Developers also use it to generate placeholder credentials, API keys for testing, or random tokens during development.

Tips for managing generated passwords

Since a strong random password isn't meant to be memorized, pair this generator with a password manager that can store and autofill it for you — that combination is widely considered the most practical way to use unique, high-entropy passwords across dozens of accounts without writing any of them down. Avoid generating a password and then reusing it across multiple accounts, since that defeats the purpose of generating a unique one in the first place; instead, generate a fresh password for each new account you create.

Why this beats a password you make up yourself

People are predictable in ways that make hand-crafted passwords weaker than they feel. Common substitutions like swapping "a" for "@" or appending a birth year are well known to attackers and built into the password-cracking tools they use, so a password that feels clever to type often isn't meaningfully harder to guess than the word it's based on. A password assembled from truly random characters has no underlying pattern to exploit at all — there's no dictionary word, personal detail, or keyboard pattern for an attacker's tools to latch onto, which is precisely what makes algorithmically generated randomness more resistant to both automated guessing and the kind of targeted guessing that uses information about you specifically.