強力なパスワードを生成する

Weak passwords are the number one cause of hacked accounts. Generate cryptographically strong passwords that are impossible to guess.

仕組み

Our password generator uses the Web Crypto API's getRandomValues() method, which provides cryptographically secure random numbers sourced from your operating system's entropy pool. Unlike pseudo-random generators, this produces passwords that are truly unpredictable.

関連ツール

ブラウザベースのユーティリティ ツールを使用する理由は何ですか?

Online utilities like password generators, text formatters, and URL cleaners are convenient, but most send your data to remote servers. Our browser-based tools process everything locally — your passwords, text, and URLs never leave your device.

This is especially important for sensitive operations like generating passwords, checking password strength, or cleaning URLs that contain tracking parameters. With Presend, you get the convenience of online tools with the security of offline software.

当社のユーティリティツールがあなたのプライバシーをどのように保護するか

1. All processing happens in your browser using JavaScript
2. No data is transmitted to external servers
3. No cookies or tracking scripts monitor your usage
4. Your input data is cleared when you close the tab

当社のユーティリティ ツールを使用すると何ができるでしょうか?

Generate cryptographically secure passwords, check password strength against entropy analysis, convert between JSON and CSV formats, compare text differences, split long text into social media threads, clean tracking parameters from URLs, validate email lists, check color contrast for accessibility, and convert images to Base64 for embedding.

これらのツールは本当に無料ですか?

Yes — all our utility tools are completely free to use, with no registration required, no usage limits, and no watermarks. We believe privacy tools should be accessible to everyone, not locked behind paywalls or subscription models.