📦 Base64 Encoder / Decoder
Encode or decode Base64 with full UTF-8 support, fully local
✓ Runs entirely in your browser — your data never leaves this device
About This Tool
Encode or decode between plain text and Base64 with full UTF-8 support (Chinese, Japanese, Korean, emoji). Common uses: Data URLs, API debugging and simple encoding for transport.
How to Use
- Paste text or a Base64 string
- Click Encode or Decode
- Copy the result — CJK text is handled as UTF-8 automatically
FAQ
Why does my CJK Base64 differ from other sites?
Base64 encodes bytes, so the charset matters. This tool uses standard UTF-8, matching most backends; others may use Latin-1.
Is Base64 encryption?
No. It is just an encoding that anyone can reverse — never use it to protect secrets.