Base64とは？
Base64はバイナリデータを64種類の印刷可能なASCII文字で表現するエンコード方式です。
Base64エンコーダー
テキストをBase64形式に変換
Base64の仕組み
Base64 encoding works by taking groups of three bytes (24 bits) of binary data and splitting them into four groups of six bits each. Each 6-bit group is then mapped to one of 64 printable ASCII characters.
なぜBase64を使うのか？
Base64 encoding is essential in many areas of software development. It is used to embed images in HTML/CSS, transmit binary data over text-based protocols like email (MIME) and HTTP, store data in JSON/XML formats, and encode authentication credentials.