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密碼產生器

自訂長度與字元，即時產生安全隨機密碼。全部在本機運算，不上傳。
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FAQ · 常見問題
密碼有上傳到伺服器嗎？ / Is my password uploaded?

沒有，全部在你瀏覽器本機用加密級亂數產生，不會傳出去。No — generated locally with crypto-grade randomness, never sent anywhere.

怎樣算強密碼？ / What makes a strong password?

越長越好（建議 16+）、混合大小寫數字符號。Longer is better (16+) with a mix of upper/lower/numbers/symbols.

🏠 AI工具人 🛠️ JSON·Regex 🧮 Token 成本

About this free password generator

A strong, unique password is your first line of defense against account takeovers. This free tool creates random passwords right in your browser using your device's cryptographically secure random generator (crypto.getRandomValues) — nothing is ever sent to a server, logged, or stored.

How to use

  1. Choose a length — 16 characters or more is recommended for important accounts.
  2. Toggle which character types to include: uppercase, lowercase, numbers and symbols.
  3. Click Generate to create a fresh random password.
  4. Copy it and store it in your password manager — don't reuse passwords across sites.

Why use it

Reusing one password means a single breach can expose every account. Long, random passwords are far harder to brute-force or guess. Because everything runs locally in your browser, it's safe to generate passwords even on a shared or public network.

FAQ

Is it safe to generate a password on a website?

Here, yes — generation happens entirely in your browser with cryptographically secure randomness, and the result never leaves your device or touches a server.

How long should a password be?

16+ characters for important accounts; longer is stronger. Including all four character types maximizes entropy.

Do I still need a password manager?

Yes. Generate a unique password here, then save it in a manager so you never have to remember or reuse passwords.

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