Text to Base64 encoding is the process of converting plain text into Base64 format using 64 ASCII characters (A-Z, a-z, 0-9, +, /). This encoding makes text safe for transmission through systems that only handle ASCII, such as email protocols, HTTP headers, and JSON APIs.

When you encode text to Base64, the original characters are first converted to UTF-8 bytes, then those bytes are converted to Base64 representation. This ensures that international characters, emojis, and special symbols are properly preserved during transmission and storage in REST APIs and web applications.

Our text to Base64 encoder follows RFC 4648 standards and automatically handles UTF-8 encoding, making it perfect for modern web applications. The implementation uses secure client-side processing that need to encode multilingual text content.

Base64 encoding converts groups of three bytes (24 bits) into four Base64 characters. The encoding algorithm splits the 24 bits into four 6-bit groups, then maps each 6-bit value to one of the 64 Base64 characters.

When the input length isn't a multiple of 3, the algorithm adds padding characters (=) to make the output length a multiple of 4. This ensures the encoded data can be properly decoded. The transformation process is defined in the MIME Content-Transfer-Encoding specification and results in an output that's approximately 33% larger than the original data.