パスワード生成
強力なランダムパスワードでアカウントを安全に保護しましょう！
パスワードジェネレーターとは？
The Password Generator creates strong, random passwords that are virtually impossible to crack through brute force attacks. In an era of frequent data breaches, using unique, complex passwords for each account is one of the most important steps you can take to protect your digital security. A typical 8-character password with only lowercase letters can be cracked in minutes, while a 16-character password mixing uppercase, lowercase, numbers, and symbols would take billions of years with current technology. Password strength increases exponentially with length and character variety. This tool generates cryptographically secure random passwords entirely in your browser. Customize length, character types, and exclusion rules to meet any website's password requirements. No passwords are stored or transmitted — everything happens locally on your device.
- ✓ 長さと文字の種類を自由にカスタマイズ
- ✓ ブラウザ内生成——パスワードは保存も送信もされない
- ✓ ワンクリックでクリップボードにコピー
- ✓ Cryptographically secure randomness for truly unpredictable passwords
- ✓ Visual password strength indicator with estimated crack time
よくある質問
▶このパスワードは安全ですか？
はい！ブラウザの暗号化乱数生成器（crypto.getRandomValues）を使用しています。パスワードはサーバーに送信されません。
▶強力なパスワードの条件は？
強力なパスワードは12文字以上で、大文字、小文字、数字、記号を組み合わせて構成されます。
▶パスワードはどこかに保存されますか？
いいえ。すべてブラウザ内で実行されます。パスワードは送信も保存もされません。
▶How long should my password be?
At minimum 12 characters, ideally 16 or more. Each additional character exponentially increases security. A 16-character mixed password is virtually uncrackable with current technology, while an 8-character password can be broken in hours.
▶Should I use a different password for every account?
Yes, absolutely. If one service is breached and your password is exposed, reused passwords give attackers access to all your other accounts. Use a password manager to store unique passwords for each service.
▶Are generated passwords stored anywhere?
No. Passwords are generated using your browser's built-in cryptographic random number generator and are never sent to any server. Once you close or navigate away from the page, the generated password exists only where you copied it.
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