Choose Web Crypto (recommended), ChaCha20 or AES-256-CTR. Hover or focus the algorithm control, or click the info icon, for details. Changing algorithms clears previous results.

Choose a preset length or enter a custom integer from 1 to 256. Custom input takes priority; selecting a preset clears it. Other character rules may make a length impossible.

Enable digits, lowercase letters, uppercase letters and symbols as needed. Click a checkbox row's label, hint or blank space to toggle it; dropdowns and text fields work independently.

Choose a random first character, a letter, a digit, an underscore or another symbol. Enable the matching type; underscore requires _ in the symbol set. Without symbols, use random, letter or digit.

Edit the symbol field to use your own set or adjust a preset. Letters, digits, spaces and control characters are not allowed; an enabled symbol set must not be empty.

Exclude i, I, l, 1, L, o, 0 and O to make passwords easier to distinguish.

Limit each individual character to 1, 2 or 3 occurrences per password, or choose Unlimited. A limit of 1 prevents repeated characters; other rules still apply.

Exclude runs of three characters with consecutive character codes in either direction, such as abc, cba, 789 and 987. This does not filter keyboard patterns such as qwerty.

Each selected type normally gets at least length ÷ type count (rounded down, minimum 1) and at most length ÷ 3 (rounded up). If symbols cannot meet the minimum within the occurrence limit, each symbol is used up to that limit; selected letters and numbers fill the shortfall within their limits.

Generate 1–100 passwords per batch. Changing Quantity immediately generates a new batch using the current settings and replaces the previous results.

Generate without symbols for this batch while keeping the Include Symbols preference unchanged. The first character must be random, a letter or a digit.

Enabling this option generates immediately. With saved preferences, opening the page generates automatically using the saved settings, including whether symbols are enabled.

Click any password in the results to copy that password. Successful copying shows a confirmation; copying errors show a dialog.

Copies the next password in sequence to your clipboard and cycles through all results.

Use the language selector at the top for English, Spanish, Simplified Chinese, Traditional Chinese, Japanese, Korean, Thai or Vietnamese. Language preference is remembered in a cookie.

Passwords are generated in your browser and are not uploaded or stored by this app. Generating again replaces the results; reloading clears them, or generates a fresh batch if automatic generation is enabled.

Use HTTPS or localhost with a browser that supports secure randomness. Generation and copying failures show a dialog. If rules conflict, adjust length, enabled types, first character, symbol set or occurrence limit and retry.