Which hash algorithm should I use?

SHA-256 is recommended for most purposes. MD5 and SHA-1 are considered weak for security but still useful for checksums and non-security applications.

Is my input sent to a server?

No. All hashing is done locally in your browser using the Web Crypto API (and a JS implementation for MD5).

Which hash algorithm should I use?

SHA-256 is recommended for most purposes. MD5 and SHA-1 are considered weak for security but still useful for checksums and non-security applications.

Is my input sent to a server?

No. All hashing is done locally in your browser using the Web Crypto API (and a JS implementation for MD5).

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ハッシュジェネレーター

任意のテキスト入力からMD5、SHA-1、SHA-256、SHA-512ハッシュを生成。

100%無料登録不要ブラウザで実行

入力テキスト

MD5

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SHA-1

—

SHA-256

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SHA-512

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Hash Generatorについて

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input. All four algorithms run simultaneously so you can compare outputs. Processing happens entirely in your browser using the Web Crypto API.

よくある質問

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Generate random UUID v4 strings online.

Generate cryptographically random UUID v4 strings. Bulk generate up to 100 at once, copy individually or all at once, and validate existing UUIDs. Uses the browser's built-in crypto API.

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LaunchChatはセキュアなAPIキーのハッシュ化と訪問者ID検証にSHA-256を使用しています。

クレジットカード不要

Security-first hashing ✅. LaunchChat encrypts your API keys at rest and never stores visitor conversations in plain text.

Free tier available. No credit card required.

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