Base64エンコーダー/デコーダー

Base64文字列とファイルをエンコード・デコード

EncodeDecode

Text Input

Base64 Output

💡 About Base64

Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format. It's commonly used to encode binary data for transmission over text-based protocols.

Use Cases:
  • Email attachments (MIME)
  • Data URLs in HTML/CSS
  • JWT tokens
  • API authentication
Features:
  • UTF-8 support (emojis ✅)
  • File encoding/decoding
  • Auto-detection
  • Copy & download