🔐 Base64 エンコード/デコード

Base64エンコードとデコード変換、UTF-8中国語対応

このツールについて

Base64 encode/decode tool with full UTF-8 support, handling Chinese and emoji. Useful for data transfer, image embedding, and URL parameters.

How to use

  1. Enter text to encode or decode
  2. Click "Encode" or "Decode"
  3. Copy the result

Example

Encoding "Hello 世界" yields SGVsbG8g5LiW55WM; decoding restores the original.

FAQ

Is Base64 encryption?

No. Base64 is encoding only; anyone can decode it. Do not use it to protect sensitive data.

Why can Chinese be encoded correctly?

This tool uses UTF-8 encoding, supporting all Unicode characters including Chinese and emoji.