~/dev-multi-tool > base64
한국어 GitHub

Base64 Encoder/Decoder

input — base64 encode
$
output — base64
// output will appear here

## What is Base64 Encoder/Decoder?

Base64 Encoder/Decoder is a free online tool that converts text to Base64 encoding and back. It supports Unicode and UTF-8 characters, making it easy to encode any text including emojis and international characters.

## How to use

  1. Select Encode or Decode mode
  2. Paste or type your text in the input panel
  3. The output updates automatically in real-time
  4. Click "Swap" to switch input and output

## FAQ

Is my data safe?

Yes. All processing happens entirely in your browser. No data is sent to any server.

Does it support Unicode?

Yes. This tool properly handles Unicode and UTF-8 characters, including emojis and non-Latin scripts.

What is Base64 used for?

Base64 is commonly used to encode binary data in text-based formats like JSON, XML, emails (MIME), data URIs, and API authentication tokens.