Password Generator — Free Online Tool
Generate strong random passwords with a crypto-secure RNG. · No signup · Works on mobile
100% private: your data is processed in your browser. Nothing is uploaded to our servers.
How to use the password generator
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1
Set your desired length (12–20 characters is ideal for most accounts).
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Toggle character sets: uppercase, lowercase, numbers, symbols; optionally exclude ambiguous characters (l, 1, O, 0).
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Click Generate, check the strength meter, and copy the password.
What does this tool do?
This free password generator creates strong, random passwords using your browser's cryptographically secure random number generator — not predictable Math.random(). Choose length (up to 128), character sets, and options like excluding look-alike characters, and see the entropy strength rating for every password.
How does the password generator work?
Randomness comes from crypto.getRandomValues(), the same CSPRNG browsers use for TLS. Each character is drawn with rejection sampling to avoid modulo bias. Entropy = length × log2(alphabet size); a 16-character password from 94 symbols has ~105 bits — far beyond brute-force reach.
Frequently Asked Questions
How long should a strong password be in 2026?
At least 12 characters with mixed character types; 16+ for important accounts. A random 12-character password (94-symbol alphabet, ~78 bits of entropy) would take centuries against offline attacks at 100 billion guesses/second, while 8 characters can fall in hours. Length beats complexity tricks.
Is it safe to generate passwords on a website?
Here, yes — generation uses crypto.getRandomValues() entirely in your browser, and the password never leaves your device (check DevTools: zero network requests on generate). Best practice: generate, copy into a password manager, and never reuse a password across sites.
Is the password generator really free?
Yes — 100% free with no hidden charges, trial limits, or premium tiers for core features. No account or email needed. The site is supported by non-intrusive display ads, which keeps every tool free for everyone.
Are my files private when using the password generator?
Completely. The password generator processes everything locally in your browser — your files are never uploaded to any server. When you close the tab, everything is gone. This makes it safe for confidential documents, client work, and personal photos.
Does the password generator work on mobile phones?
Yes. It's built mobile-first and works on any modern phone browser — iPhone (Safari) and Android (Chrome) included. You can pick files straight from your camera roll and download results directly to your device.
Do I need to install any software to use the password generator?
No. The password generator runs entirely in your web browser — no downloads, extensions, or signup. Open the page, use the tool, download your result. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.