MoreOnlineTools

Base64エンコード・デコード

テキストを安全なBase64形式にエンコード、またはBase64コードをデコードします

機能

リアルタイム処理

入力と同時にエンコード・デコードを実行

双方向変換

エンコードとデコード両方の操作に対応

サイズ統計

入力と出力のサイズを比較

💾
ファイルダウンロード

結果をファイルとしてダウンロード

入力テキスト
出力結果

0

入力長

0

出力長

0%

サイズ変化

エンコード

現在のモード

使用例

画像エンコード

Webページ用に画像ファイルをBase64形式に変換します。

data:image/png;base64,iVBORw0K...
APIトークンエンコード

APIキーとトークンを安全にエンコードします。

YXBpX2tleV8xMjM0NTY3ODkwYWJjZG...
メールコンテンツ

メール添付ファイルをBase64形式でエンコードします。

SGVsbG8gV29ybGQh...

Base64エンコーダーを使う理由

安全な転送

安全な送信のためにデータをエンコード

🌐
Web互換性

Webアプリケーションに適した形式

📧
メールセキュリティ

メール添付ファイルの安全なデータ送信

プライバシー

すべての処理はブラウザ内で実行

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使い方

1
モード選択

エンコードまたはデコードモードを選択します。

2
テキスト入力

エンコードするテキスト、またはデコードするBase64コードを入力します。

3
結果取得

結果が自動的に計算され表示されます。

4
コピーまたはダウンロード

結果をコピーするか、ファイルとしてダウンロードします。

よくある質問

Base64はバイナリデータをASCII文字列に変換するエンコード方式です。Webアプリケーションやメールシステムで広く使用されています。

いいえ、Base64は暗号化方法ではありません。単なるデータエンコード形式で、簡単にデコードできます。

すべてのUnicode文字がサポートされています。UTF-8エンコーディングを使用して処理されます。

Base64エンコードは通常、サイズを約33%増加させます。

Base64エンコーダーとは？

Base64エンコーダーは、テキストをBase64形式にエンコードし、Base64コードをデコードする強力なオンラインツールです。Webデベロッパー、システム管理者、セキュリティ専門家によってデータ送信と保存に広く使用されています。

Base64エンコーダーを使用する利点

Base64エンコーダーを使用すると、データを安全にエンコードし、Webアプリケーションで使用し、メールシステムでの安全なデータ送信を確保できます。リアルタイム処理と双方向変換機能により、作業を高速化できます。

セキュリティとプライバシー

あなたのデータの安全を最優先しています

ローカル処理

すべての処理がブラウザ内で完結します

データ送信なし

データはサーバーに送信されません

保存しません

データは保存も共有もされません

SSL暗号化

安全な通信でご利用いただけます

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