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Generate strong, random passwords locally in your browser.
Generate strong, random passwords locally in your browser.
Nextooly’s Password Generator allows you to instantly generate strong, random passwords with full privacy and zero server interaction. All passwords are created locally using the Web Crypto API for maximum security.
Customize settings such as length, uppercase, lowercase, numbers, symbols, ambiguous-character filtering, mandatory character categories, and add optional prefix/suffix values. You can also generate up to 200 passwords at once and download them as a text file.
Example
Input: Your chosen settings, seed text, or options for the Password Generator workflow.
Output: A generated result that is ready to copy, save, or download.
If Password Generator is close but not quite the right fit, these related Nextooly tools cover adjacent security & privacy workflows without sending you to another service.
Best if you need to generate time-based one-time passwords (TOTP) with QR import, encrypted vault, multiple accounts, backup, and authenticator-style UI.
Best if you need to compute SHA-256, SHA-1, and MD5 hashes for text and files.
Best if you need to aES-256-GCM secure text encryption and decryption with password-based key derivation.
Does this password generator upload my passwords to any server?
No. All password generation happens entirely inside your browser using crypto.getRandomValues when available. Nothing is stored, uploaded, or logged.
Why must I choose at least one character set?
The generator needs at least one category (lowercase, uppercase, numbers, or symbols) to build a secure character pool. Without it, a password cannot be generated.
What does 'Avoid ambiguous characters' mean?
This removes characters that can look similar, such as O, 0, l, 1, and |. Enabling the option makes passwords easier to read and type without reducing security significantly.
Why is the minimum password length 4?
Shorter passwords are extremely insecure. The tool enforces a lower limit of 4 characters and a maximum of 128 to maintain strong randomness and performance.
Why can I generate up to 200 passwords at once?
Generating many passwords is fast in the browser. The limit of 200 prevents UI slowdown and accidental creation of extremely large output blocks.
Why do all passwords contain at least one character from each selected set?
To ensure stronger security, the generator forces each selected category (lower/upper/numbers/symbols) to appear at least once. The rest is filled with random characters.
Why does adding a prefix or suffix change the strength?
Prefixes and suffixes are appended after generating the secure random part. They are counted in the final length and may slightly reduce randomness if predictable.
Why do passwords appear in random order each time?
After generation, all characters are shuffled using a Fisher–Yates shuffle. This ensures maximum randomness and prevents predictable placements.
Can I copy or download all generated passwords?
Yes. The tool supports copying the entire list to your clipboard and downloading them as a .txt file.
Is this tool safe for generating production API keys or critical secrets?
While secure for general use, highly sensitive production secrets should always be generated using your platform’s official secret management tools.
2026-03-10
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