Check SSL and TLS certificate details for any domain. Free online tool to verify security in your browser.
すべてのセキュリティツールはローカルで実行され、外部にデータを送信しません。パスワード生成、ハッシュ計算などの機密操作はすべてブラウザ内で完結します。
When testing security tools, sending sensitive data like passwords or tokens to a remote server defeats the purpose. We built this tool to run entirely in your browser using the Web Crypto API — your data never leaves your device.
はい、完全無料で登録不要です。
はい、モバイルブラウザでタッチ操作に対応しています。
セキュリティ
完全に安全です。すべてのチェックはブラウザ内でローカルに実行され、外部にリクエストやデータを送信しません。
ToolPure supports MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hash algorithms. All hashing is performed locally using the Web Crypto API, ensuring your data never leaves your browser.
Yes, you can decode JWT tokens to inspect header and payload, and generate new JWT tokens with custom claims. The tool supports HS256, HS384, and HS512 signing algorithms.
Yes, password generation uses the Web Crypto API getRandomValues() function, which provides cryptographically secure random numbers. Generated passwords are not stored or transmitted anywhere.
🔒 Privacy: All processing happens locally in your browser. Your files and data never leave your device — no upload, no server, no tracking.