Password Gen
Client-Side SecureFree online Password Generator. Create strong, secure, and random passwords. Customize length and characters. Ensure your account.
Secure Passwords
Generate high-entropy credentials locally.
Configuration
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Password Generator & Passphrase Generator (Client-Side) — Secure Random, Bulk, Entropy Meter
RootUtils Password Generator creates strong passwords and easy-to-remember passphrases directly in your browser. It supports random character passwords and XKCD-style passphrases, includes a live entropy estimate (bits), and can generate a batch of unique passwords for teams, user accounts, or testing.
Everything runs locally on your device. When available, the generator uses the browser’s Web Crypto API (crypto.getRandomValues) to pick characters. If a browser does not support Web Crypto, the tool still works using a non-cryptographic fallback, and you can decide whether that meets your needs.
How to Use This Password Generator
- Choose a mode: Use Random for classic passwords like
kT9!m2Q@p1Z#. Use Passphrase for human-friendly options likeNeon-Tiger-Jump-River. - Generate New: Click Generate New to create a fresh password or batch. For a single password, the tool can auto-update when you change settings so you can tune length and options quickly.
- Copy: Click the Copy button next to your password to copy it to your clipboard. The tool includes a safe clipboard fallback for browsers that restrict programmatic copying.
- Bulk generation: Increase Quantity (up to 50) to generate a list. Then use Copy All to copy the entire batch, one password per line.
- History: When you generate and save, the tool keeps a short local history (up to 20 unique items) so you can quickly copy a recent password again.
Random Password Mode (Length + Character Sets)
Random mode builds passwords from the character sets you select. To avoid weak results, the generator ensures the output includes at least one character from each selected category (for example: uppercase, lowercase, numbers, symbols).
Length: A longer password generally increases strength. Many users choose 16+ characters for everyday accounts.
Character sets: Toggle uppercase, lowercase, numbers, and symbols depending on the site’s rules. Some systems block symbols; others require them.
No ambiguous characters: Enable this option if you want to avoid confusing characters like O vs 0 or l vs 1 in contexts where you must type manually.
Passphrase Mode (XKCD-Style Words)
Passphrases combine multiple random words into something easier to type on mobile and harder to guess than it looks. Choose the number of words, a separator, and optional formatting like capitalization or adding a number at the end.
- Word Count: Typical passphrases start at 4 words.
- Separator: Use
-,_,., or space depending on where you’ll type it. - Capitalize + number: Optional formatting that can help meet password rules without making it unreadable.
Strength & Entropy (Bits)
The strength meter estimates entropy in bits based on the size of the character pool (random mode) or word list (passphrase mode). Higher bits generally indicate a larger search space for brute force attempts. The meter is an estimate—not a guarantee—because real-world security also depends on how the password is stored and protected by the service you use.
Privacy & Common Questions
Is this password generator safe?
The generator runs client-side and does not send passwords to a server. When the Web Crypto API is available, character selection uses crypto.getRandomValues. If Web Crypto is not available, the tool can still run with a fallback.
What should I choose: random or passphrase?
Random passwords are compact and very strong at longer lengths. Passphrases can be easier to type and remember. Choose what fits the device you use and the password rules of the site.
Why does “Copy” sometimes fail?
Some browsers restrict clipboard access depending on permissions or whether the site is served over HTTPS. This tool includes a fallback copy method, but if your browser blocks clipboard access entirely, you can still copy manually.
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