Online Base64 Encoder & Decoder

Base64 is a widely used encoding scheme that converts binary data (or text) into an ASCII string format. This is particularly useful for transmitting data over channels that only reliably support text, such as in URLs, email attachments, or for storing complex data in XML or JSON. Our online Base64 Encoder/Decoder provides a simple interface to perform these operations quickly and securely within your browser. Whether you need to obscure data slightly, prepare it for transmission, or reverse the process, this tool is designed for ease of use.

Understanding Base64 Encoding

Base64 encoding takes three bytes of binary data (24 bits) and represents them as four printable ASCII characters. This means the encoded data is typically about 33% larger than the original. It's important to remember that Base64 is an *encoding* scheme, not an *encryption* scheme. While it makes data unreadable at a glance, it can be easily reversed (decoded) by anyone who knows it's Base64. Therefore, it should not be used for protecting sensitive information without additional encryption. Common use cases include embedding image data directly in HTML or CSS, or ensuring data integrity during transmission where binary data might be corrupted. Our tool handles standard UTF-8 text for encoding and decoding.