The XX file extension is a typical file arrangement intended for a variety of programs. Fashioned for older e-mail programs that do not identify binary attachments, this 7-bit ASCII text folder can be sent through e-mail without affecting its overall quality. This encoding technique uses alphanumeric typescript alongside minus and plus signs. Originally developed as a means to transport documentation without being damaged, XX encoding is similar to UU encoded (.UU) files.Untimely Internet mail configurations in addition to certain PBXs sustain no more than 7-bit ASCII codes. In order to broadcast executable programs collectively with multimedia documentations over such structure, these files, which utilize the complete eight bits of the byte, should be revolved into a 7-bit format via programming methods like BinHex, UU coding, and MIME. This is the basis why e-mail attachment is bigger than their original file size. 8-bit information has been changed to 7-bit typescript, which adds further bytes to encode them. One hundred twenty eight (128) different character values represent the 7-bit ASCII. The 7-bit ASCII table, being the prime backbone of information storage space and recent computing from Web browsing and e-mail to manuscript editing, is considered as a standard computer language.The encoding development of XX Encode is launched by the process: Start <mode><folder>, where the "mode" records execute/writes/reads approval as octal figures and the "file" is used when recreating the binary database. XX Encode recurrently acquire in groups of three bytes, totaling irregular zeroes if there be less than three bytes left. These 24-bits are divided into four 6-bit figures, of which a piece is then decoded to the nth nature in the following table.The encoded data files with the file extension XX are commonly apparent from Uuencoded information through the initial character of the line, therefore providing at least a single unabridged line (45 encoded bytes/60 characters) in the output.