Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation.

To Encode Data:

1. Input: Type or paste your plain text content into the main input field.
2. Process: Click the “Encode” button.
3. Mechanism: The tool converts the binary data of your text into a sequence of 8-bit bytes, then groups them into 24-bit buffers, and finally maps them to the Base64 character set (A-Z, a-z, 0-9, +, /).
4. Result: The encoded string appears immediately in the result box.

To Decode Data:

1. Input: Paste a valid Base64 string into the input field.
2. Process: Click the “Decode” button.
3. Mechanism: The tool reverses the encoding process, mapping the Base64 characters back to their original byte values.
4. Result: The original text is reconstructed and displayed.

The tool includes error handling to alert you if an invalid Base64 string is provided for decoding. It also utilizes specific JavaScript functions (encodeURIComponent and decodeURIComponent) to ensure robust handling of special UTF-8 characters.