Base64 Encode String Online

Base64 Encoder/Decoder

This free and open-source tool allows you to easily encode text to Base64 format or decode Base64 back to plain text. Base64 encoding is commonly used to represent binary data in an ASCII string format.

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It uses a set of 64 characters (A-Z, a-z, 0-9, + and /) to represent data. The '=' character is used as padding when the input length is not divisible by 3.

How to Use

  1. Enter your text in the input box.
  2. Choose "Encode" to convert plain text to Base64, or "Decode" to convert Base64 to plain text.
  3. The result will appear in the output box.
  4. Click "Copy" to copy the result to your clipboard.

Features

  • Real-time encoding and decoding
  • Support for both text and Base64 input
  • One-click copy to clipboard
  • Clear button to reset input and output

Use Cases

  • Encoding binary data for transmission over text-based protocols
  • Storing complex data in databases that don't support binary formats
  • Obfuscating data (note: Base64 is not encryption and does not provide security)
  • Embedding image data in CSS or HTML

How It Works

  • Encoding: The tool converts each character to its ASCII value, then to binary. It then groups these binary values and converts them to Base64 characters.
  • Decoding: The process is reversed, converting Base64 characters back to binary, then to ASCII, and finally to plain text.

Privacy and Security

This tool processes all data directly in your browser. No information is sent to any server, ensuring your data remains private and secure.